Condensed Consolidated Statements of Stockholders' Equity (Deficit) - 3 months ended Apr. 01, 2017 - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock [Member]	Additional Paid-In Capital [Member]	Stockholder Notes [Member]	Accumulated Deficit [Member]
Balance at Dec. 31, 2016	$ (301,202)	$ 781	$ 12,323	$ (902)	$ (313,404)
Balance (in shares) at Dec. 31, 2016		78,079
Increase (Decrease) in Shareholders' Equity
Net income	28,208				28,208
Directors' Compensation	58		58
Directors' compensation paid in shares)		2
Dividends and dividend equivalents	(12,712)				(12,712)
Stock compensation expense	5,151	$ 2	5,149
Stock compensation expense (in shares)		131
Stock surrendered to settle employee withholding	(900)		(900)
Stock surrendered to settle employee withholding, shares		(29)
Stock compensation cumulative effect adjustment	84		426		(342)
Stockholder notes:
Interest	(2)			(2)
Retirement	183			183
Balance at Apr. 01, 2017	$ (281,132)	$ 783	$ 17,056	$ (721)	$ (298,250)
Balance (in shares) at Apr. 01, 2017		78,183