Consolidated Statements of Changes in Stockholders' Equity (USD $) In Thousands, unless otherwise specified	Total	Common stock	Additional Paid-in Capital	Accumulated Deficit	Treasury stock
Balances at Dec. 31, 2013	$ 119,834	$ 2	$ 361,706	$ (161,644)	$ (80,230)
Balances (in shares) at Dec. 31, 2013		26,909			3,124
Increase (Decrease) in Stockholders' Equity
Net income	7,496			7,496
Stock-based compensation to employees and directors	2,949		2,949
Common stock issued upon vesting of restricted stock		301
Exercise of stock options	342		342
Exercise of stock options (in shares)		20
Purchase of treasury stock	(2,301)				(2,301)
Purchase of treasury stock (in shares)					79
Balances at Sep. 30, 2014	$ 128,320	$ 2	$ 364,997	$ (154,148)	$ (82,531)
Balances (in shares) at Sep. 30, 2014		27,230			3,203