Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Apr. 01, 2017	Dec. 31, 2016
Preferred stock, par value (in usd per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized	5,000	5,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value (in usd per share)	$ 0.01	$ 0.01
Common stock, shares authorized	5,000	5,000
Common stock, shares issued	5,000	5,000
Common stock, shares outstanding	5,000	5,000
Allowance for Doubtful Accounts Receivable	$ 928	$ 907
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment	81,921	74,713
Less: Accumulated amortization	$ 104,210	$ 94,658