Annual report pursuant to Section 13 and 15(d)

Debt and Finance Leases - Additional Information (Details)

v3.20.4
Debt and Finance Leases - Additional Information (Details)
2 Months Ended 3 Months Ended 6 Months Ended 12 Months Ended
Sep. 27, 2019
USD ($)
Aug. 08, 2019
USD ($)
Jul. 03, 2019
USD ($)
Jul. 31, 2020
USD ($)
Sep. 27, 2020
USD ($)
Jun. 28, 2020
USD ($)
Mar. 29, 2020
USD ($)
Jun. 30, 2021
USD ($)
Jan. 03, 2021
USD ($)
$ / shares
Dec. 29, 2019
USD ($)
$ / shares
shares
Dec. 30, 2018
USD ($)
Dec. 28, 2020
shares
Sep. 25, 2020
USD ($)
Jun. 26, 2020
USD ($)
Mar. 29, 2019
Mar. 28, 2019
Nov. 08, 2018
shares
Debt Disclosure [Line Items]                                  
Cash restructuring costs $ 2,300,000                                
Write-offs of accounts receivable 1,623,000                                
Write-offs of inventory 1,607,000                                
Investments under restructuring $ 2,300,000                                
Restructuring Charges, Total                 $ 4,125,000 $ 7,955,000              
Revolving credit facility                 34,694,000 34,701,000              
Debt Instrument, Unamortized Discount, Total                 1,742,000 1,464,000              
Amortization of deferred financing fees and debt issuance costs                 $ 1,205,000 1,592,000 $ 194,000            
Initial term of leases                 12 months                
Lessee, Operating Lease, Option to Extend Amount                 $ 4,518,000                
Lessee, Finance Lease, Option to Extend Amount                 $ 6,456,000                
PNC and TCW Amendment [Member]                                  
Debt Disclosure [Line Items]                                  
Non-recurring labor costs and temporary employee bonuses           $ 1,000,000.0 $ 200,000,000                    
TCW Fifth Amendment [Member]                                  
Debt Disclosure [Line Items]                                  
Non-recurring labor costs and temporary employee bonuses           $ 1,000,000.0 $ 200,000,000                    
Increase in aggregate principal amount of indebtedness                           $ 3,750,000      
Amendment fee                           75,000,000      
PNC Fourth Amendment [Member]                                  
Debt Disclosure [Line Items]                                  
Increase in aggregate principal amount of indebtedness                           3,750,000      
Amendment fee                           $ 50,000,000      
PNC Amendment No. 5 [Member]                                  
Debt Disclosure [Line Items]                                  
Line of credit facility, maximum borrowing capacity                         $ 2,000,000        
Non-recurring labor costs and temporary employee bonuses         $ 1,500,000                        
TCW Amendment No. 6 [Member]                                  
Debt Disclosure [Line Items]                                  
Non-recurring labor costs and temporary employee bonuses         $ 1,500,000                        
PNC Amendment No. 6 [Member] | Forecast [Member]                                  
Debt Disclosure [Line Items]                                  
Write-offs of accounts receivable, inventory and fixed assets               $ 1,500,000                  
TCW Amendment No. 7 [Member] | Forecast [Member]                                  
Debt Disclosure [Line Items]                                  
Restructuring and severance charges, accruals and reserves               1,000,000.0                  
Restructuring Charges, Total               4,000,000.0                  
Write-offs of accounts receivable, inventory and fixed assets               1,500,000                  
Liquidity               7,500,000                  
Minimum [Member]                                  
Debt Disclosure [Line Items]                                  
Lessee, Operating Lease, Renewal Term                 1 year                
Maximum [Member]                                  
Debt Disclosure [Line Items]                                  
Lessee, Operating Lease, Renewal Term                 5 years                
Maximum [Member] | PNC and TCW Amendment [Member] | Employees at Zacatecas, Mexico Facility [Member]                                  
Debt Disclosure [Line Items]                                  
Restructuring and severance charges, accruals and reserves       $ 844,000,000                          
Maximum [Member] | PNC and TCW Amendment [Member] | Corporate Selling, General and Administrative Employees [Member]                                  
Debt Disclosure [Line Items]                                  
Restructuring and severance charges, accruals and reserves       156,000,000                          
Maximum [Member] | TCW Fifth Amendment [Member] | Employees at Zacatecas, Mexico Facility [Member]                                  
Debt Disclosure [Line Items]                                  
Restructuring and severance charges, accruals and reserves       844,000,000                          
Maximum [Member] | TCW Fifth Amendment [Member] | Corporate Selling, General and Administrative Employees [Member]                                  
Debt Disclosure [Line Items]                                  
Restructuring and severance charges, accruals and reserves       156,000,000                          
Maximum [Member] | PNC Amendment No. 6 [Member] | Forecast [Member]                                  
Debt Disclosure [Line Items]                                  
Restructuring Charges, Total               $ 4,000,000.0                  
Maximum [Member] | PNC Amendment No. 6 [Member] | Employees at Zacatecas, Mexico Facility [Member]                                  
Debt Disclosure [Line Items]                                  
Restructuring and severance charges, accruals and reserves       $ 1,000,000.0                          
PNC Bank [Member]                                  
Debt Disclosure [Line Items]                                  
Maturity date                 Nov. 08, 2023                
PNC Bank [Member] | Base Rate [Member] | Minimum [Member] | Term Loan [Member]                                  
Debt Disclosure [Line Items]                                  
Debt instrument, basis spread on variable rate                 0.75%                
PNC Bank [Member] | Base Rate [Member] | Maximum [Member] | Term Loan [Member]                                  
Debt Disclosure [Line Items]                                  
Debt instrument, basis spread on variable rate                 1.25%                
PNC Bank [Member] | London Interbank Offered Rate (LIBOR) [Member] | Minimum [Member] | Term Loan [Member]                                  
Debt Disclosure [Line Items]                                  
Debt instrument, basis spread on variable rate                 2.50%                
PNC Bank [Member] | London Interbank Offered Rate (LIBOR) [Member] | Maximum [Member] | Term Loan [Member]                                  
Debt Disclosure [Line Items]                                  
Debt instrument, basis spread on variable rate                 3.00%                
PNC Bank [Member] | Foreign Line of Credit [Member]                                  
Debt Disclosure [Line Items]                                  
Maturity date                 Nov. 08, 2023                
Line of credit facility, maximum borrowing capacity   $ 15,000,000                              
Line of credit facility, maximum borrowing capacity, increased   $ 20,000,000                              
PNC Bank [Member] | Foreign Line of Credit [Member] | Base Rate [Member] | Minimum [Member]                                  
Debt Disclosure [Line Items]                                  
Debt instrument, basis spread on variable rate   0.75%             0.75%                
PNC Bank [Member] | Foreign Line of Credit [Member] | Base Rate [Member] | Maximum [Member]                                  
Debt Disclosure [Line Items]                                  
Debt instrument, basis spread on variable rate   1.25%             1.25%                
PNC Bank [Member] | Foreign Line of Credit [Member] | London Interbank Offered Rate (LIBOR) [Member] | Minimum [Member]                                  
Debt Disclosure [Line Items]                                  
Debt instrument, basis spread on variable rate   2.50%             2.50%                
PNC Bank [Member] | Foreign Line of Credit [Member] | London Interbank Offered Rate (LIBOR) [Member] | Maximum [Member]                                  
Debt Disclosure [Line Items]                                  
Debt instrument, basis spread on variable rate   3.00%             3.00%                
PNC Bank [Member] | Revolving Credit Facility [Member]                                  
Debt Disclosure [Line Items]                                  
Line of credit facility, maximum borrowing capacity   $ 65,000,000             $ 65,000,000                
Revolving credit facility                 34,694,000 34,701,000              
Line of Credit Facility, Remaining Borrowing Capacity                 $ 28,447,000 $ 21,644,000              
TCW Asset Management Company, LLC [Member]                                  
Debt Disclosure [Line Items]                                  
Maturity date                 Nov. 08, 2023                
Class of Warrant or Right, Outstanding (in shares) | shares                       651,949         504,735
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) | shares                   511,949              
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares                 $ 0.01                
Class of warrant or right term                 84 months                
Warrants and Rights Outstanding                 $ 3,233,000 $ 1,730,000 $ 1,898,000            
Share Price (in dollars per share) | $ / shares                 $ 4.96 $ 3.38              
TCW Asset Management Company, LLC [Member] | Rights Offering and the Registered Direct Offering in June 2019 [Member]                                  
Debt Disclosure [Line Items]                                  
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) | shares                   7,214              
TCW Asset Management Company, LLC [Member] | Warrants Issued During Fourth Quarter of 2020                                  
Debt Disclosure [Line Items]                                  
Debt Instrument, Unamortized Discount, Total                 $ 651,000                
Warrants and Rights Outstanding                 $ 140,000,000                
Share Price (in dollars per share) | $ / shares                 $ 4.65                
TCW Asset Management Company, LLC [Member] | Term Loan [Member]                                  
Debt Disclosure [Line Items]                                  
Additional prepayment fee after closing date, percent, first twelve months                 3.00%                
Additional prepayment fee after closing date, percent, year two                 2.00%                
Additional prepayment fee after closing date, percent, year three                 1.00%                
TCW Asset Management Company, LLC [Member] | Term Loan A [Member]                                  
Debt Disclosure [Line Items]                                  
Maturity date                 Nov. 08, 2023                
Debt instrument, leverage ratio required                             3.75 3.50  
Repayments of debt   10,000,000                              
Maximum paydown of debt instrument, permit   $ 10,000,000                              
TCW Asset Management Company, LLC [Member] | Term Loan B [Member]                                  
Debt Disclosure [Line Items]                                  
Maturity date                 Jul. 03, 2019                
Repayments of debt     $ 12,022,000                            
TCW Asset Management Company, LLC [Member] | TCW Amendment No. 7 [Member]                                  
Debt Disclosure [Line Items]                                  
Class of Warrant or Right, Outstanding (in shares) | shares                       140,000          
TCW Asset Management Company, LLC [Member] | London Interbank Offered Rate (LIBOR) [Member] | Financing Agreement Through June 30, 2020 [Member]                                  
Debt Disclosure [Line Items]                                  
Debt instrument, basis spread on variable rate   8.75%             8.75%                
TCW Asset Management Company, LLC [Member] | London Interbank Offered Rate (LIBOR) [Member] | Minimum [Member] | Financing Agreement Through June 30, 2020 [Member]                                  
Debt Disclosure [Line Items]                                  
Debt instrument, basis spread on variable rate   7.25%                              
TCW Asset Management Company, LLC [Member] | London Interbank Offered Rate (LIBOR) [Member] | Minimum [Member] | Term Loan A [Member]                                  
Debt Disclosure [Line Items]                                  
Debt instrument, basis spread on variable rate                 7.25%                
TCW Asset Management Company, LLC [Member] | London Interbank Offered Rate (LIBOR) [Member] | Maximum [Member] | Financing Agreement Through June 30, 2020 [Member]                                  
Debt Disclosure [Line Items]                                  
Debt instrument, basis spread on variable rate   8.75%                              
TCW Asset Management Company, LLC [Member] | London Interbank Offered Rate (LIBOR) [Member] | Maximum [Member] | Term Loan A [Member]                                  
Debt Disclosure [Line Items]                                  
Debt instrument, basis spread on variable rate                 8.75%                
TCW Asset Management Company, LLC [Member] | Term Loan A [Member]                                  
Debt Disclosure [Line Items]                                  
Repayments of debt   $ 10,000,000                              
Revolving credit facility                 $ 37,188,000 $ 38,750,000              
Line of Credit Facility, Remaining Borrowing Capacity                 2,016,000 2,286,000              
Debt Instrument, Unamortized Discount, Total                 1,742,000 $ 1,464,000              
Amortization of deferred financing fees and debt issuance costs                 $ 1,562,000