CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Common Stock	Additional Paid-in Capital	Retained Deficit	Accumulated Other Comprehensive (Loss) Income	Total
Balance at beginning of period at Dec. 31, 2018	$ 230	$ 153,268	$ (34,518)	$ (1,964)	$ 117,016
Balance at beginning of period (in shares) at Dec. 31, 2018	23,018,441
Increase (Decrease) in Stockholders' Equity
Net income (loss)			(137)		(137)
Unrealized income (loss) on foreign exchange rate translation				269
Income tax expense (benefit)				(60)
Other comprehensive income (loss)				209	209
Issuance of common stock under stock compensation plans	$ 2	(2)
Issuance of common stock under stock compensation plans (in shares)	229,459
Stock-based compensation expense		297			297
Issuance of common stock as compensation		73			73
Issuance of common stock as compensation (in shares)	24,785
Shares exchanged for taxes on stock-based compensation		(206)			(206)
Shares exchanged for taxes on stock-based compensation (in shares)	(53,201)
Balance at end of period at Mar. 31, 2019	$ 232	153,430	(34,655)	(1,755)	117,252
Balance at end of period (in shares) at Mar. 31, 2019	23,219,484
Balance at beginning of period at Dec. 31, 2018	$ 230	153,268	(34,518)	(1,964)	117,016
Balance at beginning of period (in shares) at Dec. 31, 2018	23,018,441
Increase (Decrease) in Stockholders' Equity
Net income (loss)					(11,383)
Balance at end of period at Jun. 30, 2019	$ 233	153,694	(45,901)	(1,581)	106,445
Balance at end of period (in shares) at Jun. 30, 2019	23,270,100
Balance at beginning of period at Mar. 31, 2019	$ 232	153,430	(34,655)	(1,755)	117,252
Balance at beginning of period (in shares) at Mar. 31, 2019	23,219,484
Increase (Decrease) in Stockholders' Equity
Net income (loss)			(11,246)		(11,246)
Unrealized income (loss) on foreign exchange rate translation				224
Income tax expense (benefit)				(50)
Other comprehensive income (loss)				174	174
Issuance of common stock under stock compensation plans (in shares)	34,000
Stock-based compensation expense		221			221
Issuance of common stock as compensation	$ 1	73			74
Issuance of common stock as compensation (in shares)	29,016
Shares exchanged for taxes on stock-based compensation		(30)			(30)
Shares exchanged for taxes on stock-based compensation (in shares)	(12,400)
Balance at end of period at Jun. 30, 2019	$ 233	153,694	(45,901)	(1,581)	106,445
Balance at end of period (in shares) at Jun. 30, 2019	23,270,100
Balance at beginning of period at Dec. 31, 2019	$ 233	154,235	(49,731)	(1,572)	$ 103,165
Balance at beginning of period (in shares) at Dec. 31, 2019	23,335,855				23,287,410
Increase (Decrease) in Stockholders' Equity
Net income (loss)			993		$ 993
Unrealized income (loss) on foreign exchange rate translation				(1,199)
Other comprehensive income (loss)				(1,199)	(1,199)
Stock-based compensation expense		203			203
Balance at end of period at Mar. 31, 2020	$ 233	154,438	(48,738)	(2,771)	103,162
Balance at end of period (in shares) at Mar. 31, 2020	23,335,855
Balance at beginning of period at Dec. 31, 2019	$ 233	154,235	(49,731)	(1,572)	$ 103,165
Balance at beginning of period (in shares) at Dec. 31, 2019	23,335,855				23,287,410
Increase (Decrease) in Stockholders' Equity
Net income (loss)					$ 2,493
Balance at end of period at Jun. 30, 2020	$ 234	154,691	(47,238)	(2,167)	$ 105,520
Balance at end of period (in shares) at Jun. 30, 2020	23,399,035				23,350,590
Balance at beginning of period at Mar. 31, 2020	$ 233	154,438	(48,738)	(2,771)	$ 103,162
Balance at beginning of period (in shares) at Mar. 31, 2020	23,335,855
Increase (Decrease) in Stockholders' Equity
Net income (loss)			1,500		1,500
Unrealized income (loss) on foreign exchange rate translation				604
Other comprehensive income (loss)				604	604
Issuance of common stock under stock compensation plans	$ 1	(1)
Issuance of common stock under stock compensation plans (in shares)	78,600
Stock-based compensation expense		271			271
Shares exchanged for taxes on stock-based compensation		(17)			(17)
Shares exchanged for taxes on stock-based compensation (in shares)	(15,420)
Balance at end of period at Jun. 30, 2020	$ 234	$ 154,691	$ (47,238)	$ (2,167)	$ 105,520
Balance at end of period (in shares) at Jun. 30, 2020	23,399,035				23,350,590