Consolidated Statements of Stockholders' Equity (USD $) In Thousands, except Share data	Total	Common Stock [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]
Balance at Dec. 31, 2011	$ 87,565	$ 12,884	$ 71,348	$ 3,333
Balance (in shares) at Dec. 31, 2011		12,884
Other comprehensive income	760			760
Net Income (Loss)	(4,930)		(4,930)
Expense of stock options	574		574
Exercise of stock options	441	504	(63)
Exercise of stock options (in shares)		504
Settlement of restricted stock units	0	3	(3)
Settlement of restricted stock units (in shares)		3
Dividends declared	(4,150)		(4,150)
Stock issued to directors as compensation	197	36	161
Stock issued to directors as compensation (in shares)		36
Balance at Dec. 29, 2012	80,457	13,427	62,937	4,093
Balance (in shares) at Dec. 29, 2012		13,427
Other comprehensive income	826			826
Net Income (Loss)	9,805		9,805
Expense of stock options	557		557
Exercise of stock options	636	184	452
Exercise of stock options (in shares)		184
Settlement of restricted stock units	0	17	(17)
Settlement of restricted stock units (in shares)		17
Tax benefit from settlement of stock compensation	110		110
Dividends declared	(4,622)		(4,622)
Stock issued to directors as compensation	186	29	157
Stock issued to directors as compensation (in shares)		29
Balance at Dec. 28, 2013	87,955	13,657	69,379	4,919
Balance (in shares) at Dec. 28, 2013		13,657
Other comprehensive income	(6,883)			(6,883)
Net Income (Loss)	11,817		11,817
Expense of stock options	716		716
Exercise of stock options	1,386	301	1,085
Exercise of stock options (in shares)		301
Settlement of restricted stock units	0	34	(34)
Settlement of restricted stock units (in shares)		34
Dividends declared	(5,294)		(5,294)
Stock issued to directors as compensation	82	6	76
Stock issued to directors as compensation (in shares)		6
Balance at Dec. 27, 2014	$ 89,779	$ 13,998	$ 77,455	$ (1,964)
Balance (in shares) at Dec. 27, 2014		13,998