UNAUDITED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - 6 months ended Jun. 30, 2016 - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Shares Held Under Employee Participation Plan	Additional Paid-in Capital	Accumulated Other Comprehensive Loss	Accumulated Earnings
Balance at beginning of period at Dec. 31, 2015	$ 1,096,282	$ 576	$ (469)	$ 738,401	$ (254,892)	$ 612,666
Balance beginning of period (in shares) at Dec. 31, 2015		57,593
Increase (Decrease) in Stockholders' Equity
Net income (loss)	(16,905)					(16,905)
Other comprehensive income	44,659				44,659
Stock-based compensation	4,739			4,739
Issuance of restricted shares, net of shares remitted	(1,879)	$ 1		(1,880)
Issuance of restricted shares, net of shares remitted (in shares)		97
Repurchases of common stock	$ (10,134)	$ (2)		(10,132)
Repurchases of common stock (in shares)	(200)	(203)
Exercise of stock options (in shares)		8
Exercise of stock options	$ 184			184
Net tax deficiency on stock based awards	(603)			(603)
Balance at end of period at Jun. 30, 2016	$ 1,116,343	$ 575	$ (469)	$ 730,709	$ (210,233)	$ 595,761
Balance ending of period (in shares) at Jun. 30, 2016		57,495