CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - 9 months ended Sep. 30, 2018 - USD ($) $ in Thousands	Common Stock	Treasury Stock	Additional Paid-in Capital	Accumulated Deficit	Total
Balance at beginning of period at Dec. 31, 2017	$ 2	$ (959)	$ 144,074	$ (19,229)	$ 123,888
Balance at beginning of period (in shares) at Dec. 31, 2017	19,371,005	(73,466)
Increase (Decrease) in Stockholders' Equity
Common stock offering issuance costs			(9)		(9)
Issuance of common stock in connection with acquisition			3,595		3,595
Issuance of common stock in connection with acquisition (in shares)	45,561
Issuance of restricted stock (in shares)	433,459
Shares surrendered by stockholder		(2,474)
Shares repurchased		$ (2,866)			(2,866)
Shares repurchased (in shares)		(80,000)
Net exercise of stock options			(18)		(18)
Net exercise of stock options (in shares)	258,289
Exercise of stock options			2,590		2,590
Exercise of stock options (in shares)	404,185
Stock based compensation expense			7,121		7,121
Net income				(36,704)	(36,704)
Balance at end of period at Sep. 30, 2018	$ 2	$ (3,825)	$ 157,353	$ (55,933)	$ 97,597
Balance at end of period (in shares) at Sep. 30, 2018	20,512,499	(155,940)