Consolidated Statement of Stockholders' Equity (USD $) In Thousands, except Share data, unless otherwise specified	Total	Common Stock	Treasury Stock	Additional Paid-In Capital	Retained Earnings
Balance, December 31, 2014, amount at Dec. 31, 2014	$ 236,717	$ 279	$ (3,439)	$ 166,433	$ 73,444
Balance, December 31, 2014, shares at Dec. 31, 2014	27,969,783	27,969,783
Treasury stock, balance, December 31, 2014, shares at Dec. 31, 2014	(361,231)		(361,231)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	788			788
Exercise of stock options, shares	3,970	3,970
Exercise of stock options	28			28
Forfeiture of restricted stock (shares)		(19,824)
Net loss	(258)				(258)
Balance, March 31, 2015, amount at Mar. 31, 2015	$ 237,275	$ 279	$ (3,439)	$ 167,249	$ 73,186
Balance, March 31, 2015, shares at Mar. 31, 2015	27,953,929	27,953,929
Treasury stock, balance, March 31, 2015, shares at Mar. 31, 2015	(361,231)		(361,231)