CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - 9 months ended Sep. 30, 2016 - USD ($) $ in Thousands	Total	Common Stock	Additional Paid - in Capital	Treasury Stock	Accumulated Deficit
Balance, beginning of period at Dec. 31, 2015	$ 107,988	$ 109	$ 163,133	$ (17,124)	$ (38,130)
Balance (in shares) at Dec. 31, 2015		109,467,416		2,105,945
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share-based compensation expense	13,826		13,826
Exercise of stock options	$ 2,548		(2,957)	$ 5,505
Exercise of stock options (in shares)	926,010	243,928		(682,082)
Issuance of restricted stock	$ 0	$ 1	(14,676)	$ 14,675
Issuance of restricted stock (in shares)		501,203		(1,825,329)
Restricted stock shares cancelled/forfeited	0		1,070	$ (1,070)
Restricted stock shares cancelled/forfeited (in shares)				137,575
Shares issued for services performed	$ 346		6	$ 340
Shares issued for services performed (in shares)	43,344			(43,344)
Stock repurchase	$ (10,378)			$ (10,378)
Stock repurchase (in shares)	1,338,616			1,338,616
Shares repurchased for tax withholding	$ (892)			$ (892)
Shares repurchased for tax withholding (in shares)				109,394
Shares issued in conjunction with acquisition	$ 3,346		(462)	$ 3,808
Shares issued in conjunction with acquisition (in shares)	441,009			(441,009)
Net income	$ 6,493				6,493
Balance, end of period at Sep. 30, 2016	$ 123,277	$ 110	$ 159,940	$ (5,136)	$ (31,637)
Balance (in shares) at Sep. 30, 2016		110,212,547		699,766