CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - 6 months ended Jun. 30, 2018 - USD ($) shares in Thousands, $ in Thousands	Common stock	Additional paid-in capital	Accumulated other comprehensive gain (loss)	Retained earnings	Total
Beginning balance, shares at Dec. 31, 2017	19,451
Beginning balance, value at Dec. 31, 2017	$ 19	$ 285,376	$ 9,743	$ 38,138	$ 333,276
Stock options exercised, net of shares withheld for employee tax, in shares	78
Stock options exercised, net of shares withheld for employee tax, value		(1,228)			(1,228)
Issuance of restricted stock, net of shares withheld for employee tax, in shares	105
Issuance of restricted stock, net of shares withheld for employee tax, value	$ 1	(930)			(929)
Share-based compensation		5,468			5,468
Foreign currency translation adjustment			(4,110)		(4,110)
Net income				10,154	10,154
Ending balance, shares at Jun. 30, 2018	19,634
Ending balance, value at Jun. 30, 2018	$ 20	$ 288,686	$ 5,633	$ 48,292	$ 342,631