Business Segment and Geographic Information (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								6 Months Ended		12 Months Ended
	Dec. 29, 2013	Sep. 29, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 30, 2012	Sep. 30, 2012	Jul. 01, 2012	Apr. 01, 2012	Jan. 01, 2012	Jan. 02, 2011	Dec. 29, 2013	Dec. 30, 2012	Jan. 01, 2012	Jul. 03, 2011
Segment Reporting Information [Line Items]
Income from operations	$ 951	$ 1,545	$ 1,473	$ 806	$ 1,140	$ 1,891	$ 2,540	$ 2,451	$ 4,880	$ 2,326	$ 4,775	$ 8,022	$ 8,000	$ 5,446
Identifiable assets	81,969				98,815						81,969	98,815
Export sales from the United States									3,327		5	6,698		5,624
Foreign Subsidiary [Member]
Segment Reporting Information [Line Items]
Sales									3,930		6,694	7,164		6,593
Income from operations									305		368	447		341
Identifiable assets	7,882				6,553				5,665		7,882	6,553	5,665	5,200
Capital expenditures									0		0	0		0
Depreciation and amortization									$ 23		$ 31	$ 26		$ 53
Total Revenue [Member]
Segment Reporting Information [Line Items]
Number of major customers									0
Concentration risk, percentage									10.00%