Consolidated Statements of Operations and Comprehensive (Loss) Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Net sales:
Products	$ 168,510	$ 241,609	$ 159,220
Services	140,190	132,501	101,786
Total net sales	308,700	374,110	261,006
Cost of sales:
Products (exclusive of depreciation and amortization shown below)	111,627	155,516	113,399
Services (exclusive of depreciation and amortization shown below)	84,453	73,111	57,233
Depreciation and amortization	10,722	9,662	8,647
Total cost of sales	206,802	238,289	179,279
Gross Profit	101,898	135,821	81,727
Operating expenses:
Selling, general and administrative (exclusive of depreciation and amortization shown below)	66,711	61,116	42,650
Depreciation and amortization	6,205	6,304	4,605
Restructuring charges (Note 1)		681
Total operating expenses	72,916	68,101	47,255
Income from operations	28,982	67,720	34,472
Other income (expense):
Interest, net	(20,044)	(18,328)	(7,508)
Foreign currency gain (loss)	(417)	59	(124)
Loss on debt modification and early extinguishment		(703)	(476)
Other income, net	20	359	(101)
Total other expense, net	(20,441)	(18,613)	(8,209)
Income before income taxes	8,541	49,107	26,263
Income tax expense	(3,142)	(17,846)	(10,291)
Net income from continuing operations	5,399	31,261	15,972
Discontinued operations:
Loss from a discontinued operation, net of taxes (Note 2)		(606)	(2,670)
Gain on sale of a discontinued operation, net of taxes (Note 2)		208
Net Income	5,399	30,863	13,302
Preferred stock dividends		(32,548)	(44,477)
Income attributable to common stockholders	$ 5,399	$ (1,685)	$ (31,175)
Basic and diluted earnings per share:
Continuing operations	$ 0.10	$ (0.03)	$ (0.69)
Discontinued operation		(0.01)	(0.07)
Total basic and diluted earnings per share	0.10	$ (0.04)	$ (0.76)
Dividends declared per common share	$ 0.18
Comprehensive Income
Net income	$ 5,399	$ 30,863	$ 13,302
Currency translation adjustment	(2,116)	(1,715)	(1,064)
Total comprehensive income	$ 3,283	$ 29,148	$ 12,238