UNAUDITED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - 3 months ended Mar. 31, 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 loss	(20,871)					(20,871)
Other comprehensive income	45,837				45,837
Stock-based compensation	2,093			2,093
Issuance of restricted shares, net of shares remitted	(1,425)	$ 1		(1,426)
Issuance of restricted shares, net of shares remitted (in shares)		62
Repurchases of common stock	(4,998)	$ (1)		(4,997)
Repurchases of common stock (in shares)		(104)
Net tax deficiency on stock based awards	(345)			(345)
Balance at end of period at Mar. 31, 2016	$ 1,116,573	$ 576	$ (469)	$ 733,726	$ (209,055)	$ 591,795
Balance ending of period (in shares) at Mar. 31, 2016		57,551