Note 10 - Assessment of Liquidity Risk (Details Textual) - USD ($) $ in Thousands |
Apr. 01, 2018 |
Mar. 28, 2018 |
Dec. 31, 2017 |
Apr. 02, 2017 |
Jan. 01, 2017 |
|---|---|---|---|---|---|
| Cash and Cash Equivalents, at Carrying Value, Ending Balance | $ 3,322 | $ 5,536 | $ 4,263 | $ 8,503 | |
| PNC Bank [Member] | Revolving Credit Facility [Member] | |||||
| Line of Credit Facility, Remaining Borrowing Capacity | 9,581 | $ 5,295 | |||
| Line of Credit Facility, Maximum Borrowing Capacity | 30,000 | ||||
| PNC Bank [Member] | Equipment Facility [Member] | |||||
| Line of Credit Facility, Maximum Borrowing Capacity | 3,000 | $ 3,000 | |||
| Maximum Aggregate Loans Advanced for Purchase of Equipment | $ 2,000 | $ 2,000 |
| X | ||||||||||
- Definition The maximum aggregate loans advance for purchase of equipment pursuant to the credit facility agreement. No definition available.
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- Definition Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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