Condensed Consolidated Statements of Operations and Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Net sales:
Net Sales	$ 71,681	$ 70,987	$ 205,448	$ 187,298
Cost of sales:
Depreciation and amortization	2,751	2,669	8,216	9,620
Total cost of sales	46,262	47,679	136,127	129,687
Gross profit	25,419	23,308	69,321	57,611
Operating expenses, net:
Selling, general and administrative (exclusive of depreciation and amortization shown below)	15,936	17,033	49,146	48,119
Depreciation and amortization	1,513	1,588	4,539	4,513
Litigation settlement gain			(6,000)
Total operating expenses, net	17,449	18,621	47,685	52,632
Income from operations	7,970	4,687	21,636	4,979
Other expense, net:
Interest, net	(6,085)	(6,151)	(18,847)	(17,243)
Foreign currency (loss) gain	(40)	16	(1,320)	(248)
Other income, net	14	8	25	15
Total other expense, net	(6,111)	(6,127)	(20,142)	(17,476)
Income (loss) from continuing operations before income taxes	1,859	(1,440)	1,494	(12,497)
Income tax (expense) benefit	(2,515)	355	(3,695)	4,933
Net loss from continuing operations	(656)	(1,085)	(2,201)	(7,564)
Net loss from discontinued operation, net of tax (see Note 3)	(28)	(5,030)	(16)	(22,551)
Net loss	$ (684)	$ (6,115)	$ (2,217)	$ (30,115)
Basic and diluted loss per share:
Basic and diluted loss per share Basic and diluted - Continuing operations (in dollar per share)	$ (0.06)	$ (0.10)	$ (0.20)	$ (0.68)
Basic and diluted loss per share Basic and diluted - Discontinuing operations (in dollar per share)	0.00	(0.45)	0.00	(2.02)
Net loss per share (in dollars per share)	$ (0.06)	$ (0.55)	$ (0.20)	$ (2.70)
Basic and dilutive weighted-average shares outstanding (in shares)	11,223,715	11,159,984	11,187,550	11,145,946
Comprehensive loss:
Net loss	$ (684)	$ (6,115)	$ (2,217)	$ (30,115)
Currency translation adjustment		98	31	(87)
Other comprehensive loss from discontinued operations		3,983		3,983
Reclassification adjustment to foreign currency loss			1,329
Total comprehensive loss	(684)	(2,034)	(857)	(26,219)
Products
Net sales:
Net Sales	33,963	34,673	99,845	90,911
Cost of sales:
Products and Services (exclusive of depreciation and amortization shown below)	22,182	23,796	65,769	59,076
Services
Net sales:
Net Sales	37,718	36,314	105,603	96,387
Cost of sales:
Products and Services (exclusive of depreciation and amortization shown below)	$ 21,329	$ 21,214	$ 62,142	$ 60,991