Stockholders' Equity - Summary of Changes In Stockholders' Equity (Details) - USD ($)	3 Months Ended		9 Months Ended
	Oct. 01, 2017	Oct. 02, 2016	Oct. 01, 2017	Oct. 02, 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	$ (1,709,000)		(1,709,000)
Beginning Balance			206,005,000
Net income (loss)	(11,092,000)	$ (2,404,000)	200,000	$ 6,459,000
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax	648,000	$ (212,000)	1,187,000	703,000
Total components of other comprehensive income (loss), net of tax			1,187,000
Stock-based compensation costs			531,000
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	359,144,000		359,144,000
Retained earnings ending balance	(148,065,000)		(148,065,000)
Accumulated other comprehensive income ending balance			(2,896,000)
Ending Balance	$ 209,370,000		$ 209,370,000
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			531,000
Adjustments to Additional Paid in Capital, Other			(1,447,000)
Capital in excess of par value ending balance	359,144,000		359,144,000
Retained Earnings [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)			200,000
Retained earnings ending balance	(148,065,000)		(148,065,000)
Accumulated Other Comprehensive Income (Loss) [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Accumulated other comprehensive income beginning balance	$ (1,709,000)		(1,709,000)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax			$ 1,187,000