CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)
Balances at Dec. 31, 2012	$ 713,078	$ 231	$ 57,364	$ 657,423	$ (1,940)
Net income (loss)	84,886			84,886
Foreign currency translation adjustment, net of tax expense (benefit) of ($710) 2013, $1,756 2014	(1,321)				(1,321)
Comprehensive (loss) income	83,565
Tax (expense) benefit from stock based compensation	(205)		(205)
Stock granted under restricted stock plan, net	210	1	209
Stock based compensation	5,247		5,247
Shares repurchased and retired	(5,834)	(1)	(5,833)
Shares surrendered by employees to pay taxes	(1,124)			(1,124)
Cash dividends ($1.14 per share) 2013, ($1.26 per share) 2014, ($0.63 per share) 2015	(26,350)			(26,350)
Balances at Dec. 31, 2013	768,587	231	56,782	714,835	(3,261)
Net income (loss)	55,588			55,588
Foreign currency translation adjustment, net of tax expense (benefit) of ($710) 2013, $1,756 2014	(19,708)				(19,708)
Comprehensive (loss) income	35,880
Tax (expense) benefit from stock based compensation	303		303
Stock granted under restricted stock plan, net	700	1	699
Stock based compensation	6,688		6,688
Shares repurchased and retired	(5,176)	(1)	(5,175)
Shares surrendered by employees to pay taxes	(1,804)			(1,804)
Cash dividends ($1.14 per share) 2013, ($1.26 per share) 2014, ($0.63 per share) 2015	(29,121)			(29,121)
Balances at Dec. 31, 2014	776,057	231	59,297	739,498	(22,969)
Net income (loss)	(109,544)			(109,544)
Foreign currency translation adjustment, net of tax expense (benefit) of ($710) 2013, $1,756 2014	(14,733)
Foreign currency translation adjustment	(5,880)				(5,880)
Reclassification of China cumulative translation gain to Net Loss upon substantial liquidation	(8,853)				(8,853)
Comprehensive (loss) income	(124,277)
Tax (expense) benefit from stock based compensation	(1,768)		(1,768)
Stock granted under restricted stock plan, net	700	2	698
Stock based compensation	6,840		6,840
Shares surrendered by employees to pay taxes	(580)			(580)
Cash dividends ($1.14 per share) 2013, ($1.26 per share) 2014, ($0.63 per share) 2015	(14,666)			(14,666)
Balances at Dec. 31, 2015	$ 642,306	$ 233	$ 65,067	$ 614,708	$ (37,702)