Consolidated Statements of Changes in Stockholders' Equity - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	AOCI Attributable to Parent [Member]	Retained Earnings [Member]	Treasury Stock [Member]	Total
Balance (in shares) at Jan. 03, 2015	14,148,667				1,476,780
Balance at Jan. 03, 2015	$ 707	$ 112,529	$ 91	$ (62,933)	$ (7,529)	$ 42,865
Issuance of stock under employee stock purchase plan (in shares)	73,048
Issuance of stock under employee stock purchase plan	$ 4	369				373
Translation adjustment			(2,936)			$ (2,936)
Issuance of stock upon exercise of stock options (in shares)	3,500					3,500
Issuance of stock upon exercise of stock options		19				$ 19
Issuance of stock upon vesting of restricted share units (in shares)	334,166
Issuance of stock upon vesting of restricted share units	$ 17	(17)
Effect of reduced tax deduction over book expense associated with equity awards		(15)				(15)
Share based compensation expense		1,446				1,446
Common stock repurchase (in shares)					585,966
Common stock repurchase					$ (2,836)	(2,836)
Cash dividend paid				(12,529)		(12,529)
Dividends declared on restricted stock units				(209)		(209)
Dividends on restricted share units forfeited				10		10
Net income				6,015		6,015
Balance (in shares) at Jan. 02, 2016	14,559,381				2,062,746
Balance at Jan. 02, 2016	$ 728	114,331	(2,845)	(69,646)	$ (10,365)	32,203
Common stock repurchase (in shares)					585,966
Issuance of stock under employee stock purchase plan (in shares)	81,225
Issuance of stock under employee stock purchase plan	$ 4	364				368
Translation adjustment			267			$ 267
Issuance of stock upon exercise of stock options (in shares)	2,500					2,500
Issuance of stock upon exercise of stock options		15				$ 15
Issuance of stock upon vesting of restricted share units (in shares)	73,834
Issuance of stock upon vesting of restricted share units	$ 4	(4)
Share based compensation expense		901				901
Common stock repurchase (in shares)					701,114
Common stock repurchase					$ (4,257)	(4,257)
Dividends declared on restricted stock units
Dividends on restricted share units forfeited
Net income				1,758		1,758
Balance (in shares) at Dec. 31, 2016	14,716,940				2,763,860
Balance at Dec. 31, 2016	$ 736	$ 115,607	$ (2,578)	$ (67,888)	$ (14,622)	$ 31,255
Common stock repurchase (in shares)					701,114