Condensed Consolidated Statement of Changes in Stockholders' Equity (USD $) In Thousands, unless otherwise specified	Common Stock	Additional Paid-in Capital	Retained Earnings	Common Stock Held in Treasury	Accumulated Other Comprehensive Income	Total
Balance at Dec. 31, 2013	$ 522	$ 240,057	$ 436,570	$ (268,253)	$ 8,536	$ 417,432
Increase (Decrease) in Stockholders' Equity
Net income			37,911			37,911
Other comprehensive income					(7,486)	(7,486)
Issuance of common stock for restricted share awards (919,834 shares), including a net excess tax benefit of $ 0.4 million		(14,551)		14,972		421
Issuance of common stock for the employee stock purchase plan (71,587 shares)		963				963
Shares withheld for net settlement of share-based awards (324,548 shares)				(36,128)		(36,128)
Purchase of common stock for treasury (2,034,637)				(6,586)		(6,586)
Share-based compensation		11,092				11,092
Balance at Sep. 30, 2014	$ 522	$ 237,561	$ 474,481	$ (295,995)	$ 1,050	$ 417,619