Stockholders' Equity - Summary of Changes In Stockholders' Equity (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jul. 02, 2017	Jul. 03, 2016	Jul. 02, 2017	Jul. 03, 2016
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common Stock, Value, Issued beginning balance			$ 0
Capital in excess of par value beginning balance			357,166,000
Retained earnings beginning balance			(148,265,000)
Accumulated other comprehensive income beginning balance	$ (2,357,000)		(2,357,000)
Beginning Balance			206,005,000
Net income (loss)	(5,930,000)	$ (9,052,000)	11,292,000	$ 8,863,000
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax	420,000	$ 161,000	539,000	915,000
Total components of other comprehensive income (loss), net of tax			539,000
Stock-based compensation costs			343,000
Adjustments to Additional Paid in Capital, Other			1,447,000	$ 0
Common Stock, Value, Issued ending balance	0		0
Capital in excess of par value ending balance	358,956,000		358,956,000
Retained earnings ending balance	(136,973,000)		(136,973,000)
Accumulated other comprehensive income ending balance			(2,896,000)
Ending Balance	$ 219,626,000		$ 219,626,000
Common Stock [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance (in shares)			200
Common Stock, Value, Issued beginning balance			$ 0
Ending Balance (in shares)	200		200
Common Stock, Value, Issued ending balance	$ 0		$ 0
Additional Paid-in Capital [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation costs			343,000
Adjustments to Additional Paid in Capital, Other			1,447,000
Capital in excess of par value ending balance	358,956,000		358,956,000
Retained Earnings [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Retained earnings ending balance	(136,973,000)		(136,973,000)
Accumulated Other Comprehensive Income (Loss) [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Accumulated other comprehensive income beginning balance	$ (2,357,000)		$ (2,357,000)