Condensed Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($) shares in Thousands, $ in Thousands	Preferred Stock [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	AOCI Attributable to Parent [Member]	Retained Earnings [Member]	Total
Balance (in shares) at Dec. 31, 2018	0	19,810
Balance at Dec. 31, 2018	$ 0	$ 20	$ 292,480	$ 602	$ 35,992	$ 329,094
Issuance of restricted stock, net of shares withheld for employee tax (in shares)	0	250
Issuance of restricted stock, net of shares withheld for employee tax	$ 0	$ 0	(299)	0	0	(299)
Share-based compensation	0	0	2,942	0	0	2,942
Foreign currency translation adjustment	0	0	0	2,348	0	2,348
Net loss	$ 0	$ 0	0	0	(10,474)	(10,474)
Stock options exercised, net of shares withheld for employee tax (in shares)	0	1
Stock options exercised, net of shares withheld for employee tax	$ 0	$ 0	7	0	0	7
Balance (in shares) at Mar. 31, 2019	0	20,061
Balance at Mar. 31, 2019	$ 0	$ 20	295,130	2,950	25,518	323,618
Balance (in shares) at Dec. 31, 2019	0	20,140
Balance at Dec. 31, 2019	$ 0	$ 20	303,401	430	(30,057)	273,794
Public offering of common stock, net (in shares)	0	4
Public offering of common stock, net	$ 0	$ 0	(75)	0	0	(75)
Issuance of restricted stock, net of shares withheld for employee tax (in shares)	0	105
Issuance of restricted stock, net of shares withheld for employee tax	$ 0	$ 0	(259)	0	0	(259)
Share-based compensation	0	0	3,238	0	0	3,238
Foreign currency translation adjustment	0	0	0	(2,402)	0	(2,402)
Net loss	$ 0	$ 0	0	0	(16,797)	$ (16,797)
Stock options exercised, net of shares withheld for employee tax (in shares)						(0)
Balance (in shares) at Mar. 31, 2020	0	20,249
Balance at Mar. 31, 2020	$ 0	$ 20	$ 306,305	$ (1,972)	$ (46,854)	$ 257,499