Consolidated Statements of Operations and Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019		Jun. 30, 2020	Jun. 30, 2019
Consolidated Statements of Operations and Comprehensive Income (Loss) [Abstract]
Net sales	$ 9,146	$ 17,197		$ 26,291	$ 38,138
Cost of sales	3,903	7,827		11,182	16,523
Gross profit	5,243	9,370		15,109	21,615
Operating expenses	7,580	10,617		18,676	20,649
Impairment expense	9	0		1,078	0
Income (loss) from operations	(2,346)	(1,247)		(4,645)	966
Other (income) expense:
Interest expense	0	0		0	32
Other, net	(51)	(55)		(104)	55
Total other (income) expense	(51)	(55)		(104)	87
Income (loss) before income taxes	(2,295)	(1,192)		(4,541)	879
Provision (benefit) for income taxes	(520)	(317)		(1,028)	234
Net income (loss)	(1,775)	(875)	[1]	(3,513)	645
Foreign currency translation adjustments, net of tax	130	88		(216)	402
Comprehensive income (loss)	$ (1,645)	$ (787)		$ (3,729)	$ 1,047
Net income (loss) per common share:
Basic (in dollars per share)	$ (0.20)	$ (0.10)		$ (0.39)	$ 0.07
Diluted (in dollars per share)	$ (0.20)	$ (0.10)		$ (0.39)	$ 0.07
Weighted average number of shares outstanding:
Basic (in shares)	9,042,991	8,933,648	[1]	9,036,101	9,036,101
Diluted (in shares)	9,042,991	8,933,648	[1]	9,036,101	9,039,611

[1] For the three months ended June 30, 2019, there were 2,290 shares, respectively excluded from the diluted EPS calculation because the impact of their assumed vesting would be anti-dilutive due to a net loss in that period.