SMTC Corporation Quarterly report pursuant to Section 13 or 15(d)

Note 10 - Segmented Information (Details Textual) - Customer Concentration Risk [Member]	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2019	Jul. 01, 2018	Jun. 30, 2019	Jul. 01, 2018	Dec. 30, 2018
Revenue Benchmark [Member]
Number of Major Customers	1	3	1	3
Concentration Risk, Percentage	13.50%	34.80%	13.30%	34.40%
Revenue Benchmark [Member] \| Major Customer1 [Member]
Concentration Risk, Percentage		14.40%		13.90%
Revenue Benchmark [Member] \| Major Customer2 [Member]
Concentration Risk, Percentage		10.40%		10.40%
Revenue Benchmark [Member] \| Major Customer3 [Member]
Concentration Risk, Percentage		10.00%		10.10%
Accounts Receivable [Member]
Number of Major Customers			0		2
Concentration Risk, Percentage					21.00%
Accounts Receivable [Member] \| Major Customer1 [Member]
Concentration Risk, Percentage					11.00%
Accounts Receivable [Member] \| Major Customer2 [Member]
Concentration Risk, Percentage					10.00%