CONDENSED CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (USD $) In Thousands, unless otherwise specified	Total	Common Stock	Additional Paid-In Capital	Accumulated Other Comprehensive Income	Accumulated Deficit
Balance, beginning at Dec. 31, 2013	$ 272,885	$ 483	$ 457,913	$ 11,169	$ (196,680)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	11,220				11,220
Other comprehensive income	208			208
Exercise of stock options	963	5	958
Equity-based compensation	4,733		4,733
Treasury stock purchase and retirement	(18,155)	(14)	(18,141)
Redemption of restricted shares, net	(1,120)	5	(1,125)
Income tax benefit from equity awards	353		353
Balance, ending at Jun. 30, 2014	$ 271,087	$ 479	$ 444,691	$ 11,377	$ (185,460)