Consolidated Statements of Stockholders' Equity Statement - USD ($) $ in Thousands	Total	Common Class A [Member]	Common Class B [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]
Stockholders' Equity Attributable to Parent at Dec. 30, 2017	$ 79,263	$ 45,839	$ 2,584	$ 157,139	$ (125,000)	$ (1,299)
Repurchases of Common Stock	(55)	(59)	0	4	0	0
Restricted stock grants issued	0	647	245	(892)	0	0
Class B converted into common stock	0	19	(19)	0	0	0
Stock-based compensation expense	227	0	0	227	0	0
Net Income (Loss)	(2,908)	0	0	0	(2,908)	0
Other Comprehensive Income (Loss), Net of Tax	1,024	0	0	0	0	1,024
Stockholders' Equity Attributable to Parent at Mar. 31, 2018	77,551	46,446	2,810	156,478	(127,908)	(275)
Stockholders' Equity Attributable to Parent at Dec. 30, 2017	79,263	45,839	2,584	157,139	(125,000)	(1,299)
Net Income (Loss)	(4,722)
Other Comprehensive Income (Loss), Net of Tax	1,517
Stockholders' Equity Attributable to Parent at Jun. 30, 2018	76,455	46,545	2,810	156,605	(129,723)	218
Stockholders' Equity Attributable to Parent at Mar. 31, 2018	77,551	46,446	2,810	156,478	(127,908)	(275)
Stock Issued During Period, Value, Other	0	119	0	(119)	0	0
Repurchases of Common Stock	(2)	(2)	0	0	0	0
Restricted stock grants forfeited	(3)	(18)	0	(15)	0	0
Stock-based compensation expense	231	0	0	231	0	0
Net Income (Loss)	(1,815)	0	0	0	(1,815)	0
Other Comprehensive Income (Loss), Net of Tax	493	0	0	0	0	493
Stockholders' Equity Attributable to Parent at Jun. 30, 2018	76,455	46,545	2,810	156,605	(129,723)	218
Stockholders' Equity Attributable to Parent at Dec. 29, 2018	58,984	46,568	2,518	156,390	(146,384)	(108)
Repurchases of Common Stock	(12)	(34)	0	22	0	0
Restricted stock grants forfeited	(11)	(20)	0	(9)	0	0
Class B converted into common stock	0	8	(8)	0	0	0
Stock-based compensation expense	168	0	0	168	0	0
Net Income (Loss)	(6,672)	0	0	0	(6,672)	0
Other Comprehensive Income (Loss), Net of Tax	(361)	0	0	0	0	(361)
Stockholders' Equity Attributable to Parent at Mar. 30, 2019	52,096	46,522	2,510	156,589	(153,056)	(469)
Stockholders' Equity Attributable to Parent at Dec. 29, 2018	58,984	46,568	2,518	156,390	(146,384)	(108)
Net Income (Loss)	(7,888)
Other Comprehensive Income (Loss), Net of Tax	(981)
Stockholders' Equity Attributable to Parent at Jun. 29, 2019	50,390	46,609	2,510	156,632	(154,272)	(1,089)
Stockholders' Equity Attributable to Parent at Mar. 30, 2019	52,096	46,522	2,510	156,589	(153,056)	(469)
Stock Issued During Period, Value, Other	0	87	0	(87)	0	0
Stock-based compensation expense	130	0	0	130	0	0
Net Income (Loss)	(1,216)	0	0	0	(1,216)	0
Other Comprehensive Income (Loss), Net of Tax	(620)	0	0	0	0	(620)
Stockholders' Equity Attributable to Parent at Jun. 29, 2019	$ 50,390	$ 46,609	$ 2,510	$ 156,632	$ (154,272)	$ (1,089)