Condensed Consolidated Statement of Changes in Stockholders' Equity (USD $) In Thousands, unless otherwise specified	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Common Stock Held in Treasury	Accumulated Other Comprehensive Income
Balance at Dec. 31, 2012	$ 409,770	$ 520	$ 245,002	$ 405,485	$ (253,111)	$ 11,874
Increase (Decrease) in Stockholders' Equity
Net income	21,423			21,423
Other comprehensive income	(2,845)					(2,845)
Issuance of common stock for restricted share awards (894,810 shares), including tax benefit shortfall and award cancellations of $1.7 million	(2,516)		(17,821)		15,305
Issuance of common stock for the employee stock purchase plan (121,363 shares)	936	2	934
Shares withheld for net settlement of share-based awards (303,137 shares)	(3,715)				(3,715)
Purchase of common stock for treasury (1,793,100 shares)	(24,001)				(24,001)
Share-based compensation	10,737		10,737
Balance at Sep. 30, 2013	$ 409,789	$ 522	$ 238,852	$ 426,908	$ (265,522)	$ 9,029