Condensed Consolidated Statements of Operations and Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Net sales:
Net Sales	$ 66,901	$ 61,454	$ 133,767	$ 116,311
Cost of sales:
Depreciation and amortization	2,775	3,501	5,465	6,949
Total cost of sales	44,520	41,579	89,865	82,009
Gross profit	22,381	19,875	43,902	34,302
Operating expenses, net:
Selling, general and administrative (exclusive of depreciation and amortization shown below)	16,792	15,756	33,210	31,084
Depreciation and amortization	1,493	1,465	3,026	2,927
Litigation settlement gain	(6,000)		(6,000)
Total operating expenses, net	12,285	17,221	30,236	34,011
Income from operations	10,096	2,654	13,666	291
Other expense, net:
Interest, net	(6,438)	(5,586)	(12,762)	(11,092)
Foreign currency loss	(1,321)	(466)	(1,280)	(264)
Other income (expense), net	(8)	3	11	7
Total other expense, net	(7,767)	(6,049)	(14,031)	(11,349)
Income (loss) from continuing operations before income taxes	2,329	(3,395)	(365)	(11,058)
Income tax (expense) benefit	(777)	2,593	(1,180)	4,578
Net income (loss) from continuing operations	1,552	(802)	(1,545)	(6,480)
Net income (loss) from discontinued operation, net of tax (see Note 3)	(30)	(15,907)	12	(17,521)
Net income (loss)	$ 1,522	$ (16,709)	$ (1,533)	$ (24,001)
Basic and diluted earnings (loss) per share:
Basic and diluted earnings (loss) per share Basic and diluted - Continuing operations (in dollar per share)	$ 0.14	$ (0.07)	$ (0.14)	$ (0.58)
Basic and diluted earnings (loss) per share Basic and diluted - Discontinuing operations (in dollar per share)		(1.43)		(1.57)
Net earnings (loss) per share (in dollars per share)	$ 0.14	$ (1.50)	$ (0.14)	$ (2.15)
Weighted average common shares outstanding - Basic (in shares)	11,178,462	11,143,230	11,169,468	11,138,972
Diluted weighted-average common shares outstanding (in shares)	11,242,225	11,143,230	11,169,468	11,138,972
Comprehensive income/ (loss):
Net income (loss)	$ 1,522	$ (16,709)	$ (1,533)	$ (24,001)
Currency translation adjustment		(494)	31	(185)
Reclassification adjustment to foreign currency loss	1,329		1,329
Total comprehensive income (loss)	2,851	(17,203)	(173)	(24,186)
Products
Net sales:
Net Sales	33,125	31,494	65,882	56,238
Cost of sales:
Products (exclusive of depreciation and amortization shown below)	22,098	18,962	43,587	35,280
Services
Net sales:
Net Sales	33,776	29,960	67,885	60,073
Cost of sales:
Services (exclusive of depreciation and amortization shown below)	$ 19,647	$ 19,116	$ 40,813	$ 39,780