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	13,708			13,708
Other comprehensive income	(8,700)					(8,700)
Issuance of common stock for restricted share awards (873,120 shares), including tax benefit shortfall and award cancellations of $1.7 million	(2,528)		(17,469)		14,941
Issuance of common stock for the employee stock purchase plan (68,391 shares)	466	1	465
Shares withheld for net settlement of share-based awards (296,823 shares)	(3,617)				(3,617)
Purchase of common stock for treasury (1,423,100 shares)	(17,938)				(17,938)
Share-based compensation	7,293		7,293
Balance at Jun. 30, 2013	$ 398,454	$ 521	$ 235,291	$ 419,193	$ (259,725)	$ 3,174