Condensed 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
Net sales:
Net Sales	$ 71,378	$ 66,901	$ 145,347	$ 133,767
Cost of sales:
Depreciation and amortization	2,649	2,775	5,342	5,465
Total cost of sales	48,226	44,520	96,485	89,865
Gross profit	23,152	22,381	48,862	43,902
Operating expenses, net:
Selling, general and administrative (exclusive of depreciation and amortization shown below)	19,141	16,792	35,683	33,210
Depreciation and amortization	1,505	1,493	2,990	3,026
Litigation settlement gain		(6,000)		(6,000)
Total operating expenses, net	20,646	12,285	38,673	30,236
Income from operations	2,506	10,096	10,189	13,666
Other expense, net:
Interest, net	(6,772)	(6,438)	(12,860)	(12,762)
Foreign currency (loss)	(25)	(1,321)	(33)	(1,280)
Other (expense) income, net	(7)	(8)	(94)	11
Total other expense, net	(6,804)	(7,767)	(12,987)	(14,031)
(Loss) income from continuing operations before income taxes	(4,298)	2,329	(2,798)	(365)
Income tax benefit (expense)	4,414	(777)	5,357	(1,180)
Net income (loss) from continuing operations	116	1,552	2,559	(1,545)
Net (loss) income from discontinued operation, net of tax (Note 3)	(4)	(30)	(30)	12
Net income (loss)	$ 112	$ 1,522	$ 2,529	$ (1,533)
Basic net income (loss) per share from continuing operations (in dollar per share)	$ 0.01	$ 0.14	$ 0.23	$ (0.14)
Diluted net income (loss) per share from continuing operations (in dollar per share)	0.01	0.14	0.23	(0.14)
Basic net income (loss) per share (in dollar per share)	0.01	0.14	0.23	(0.14)
Diluted net income (loss) per share (in dollar per share)	$ 0.01	$ 0.14	$ 0.22	$ (0.14)
Basic weighted-average shares outstanding (in shares)	11,229,819	11,178,462	11,227,160	11,169,468
Diluted weighted-average shares outstanding (in shares)	11,233,852	11,242,225	11,242,272	11,169,468
Comprehensive income (loss):
Net income (loss)	$ 112	$ 1,522	$ 2,529	$ (1,533)
Currency translation adjustment				31
Reclassification adjustment to foreign currency loss		1,329		1,329
Total comprehensive income (loss)	112	2,851	2,529	(173)
Products
Net sales:
Net Sales	39,077	33,125	81,578	65,882
Cost of sales:
Products and Services (exclusive of depreciation and amortization shown below)	25,911	22,098	52,290	43,587
Services
Net sales:
Net Sales	32,301	33,776	63,769	67,885
Cost of sales:
Products and Services (exclusive of depreciation and amortization shown below)	$ 19,666	$ 19,647	$ 38,853	$ 40,813