CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Revenue
Total revenue	$ 418,588	$ 589,003	$ 539,053
Cost of revenue
Total cost of revenue	369,599	536,406	465,719
Gross profit	48,989	52,597	73,334
Operating expenses
Selling and marketing expenses	9,544	12,130	10,045
General and administrative expenses	57,194	69,471	58,747
Loss on sale of business and net assets held for sale	8,812
Impairment expense		47,755
Bargain purchase gain		(3,168)
Depreciation and amortization expense	7,154	8,602	8,326
Total operating expenses	82,704	134,790	77,118
Operating loss	(33,715)	(82,193)	(3,784)
Other expense (income)
Interest expense, net	8,398	4,484	1,820
Foreign currency gain	(217)	(1,014)	(65)
Other expense, net	15	12	34
Total other expenses, net	8,196	3,482	1,789
(Loss) income from continuing operations before income tax	(41,911)	(85,675)	(5,573)
Income tax expense (benefit)	1,702	(6,946)	41,661
Loss from continuing operations	(43,613)	(78,729)	(47,234)
Discontinued operations:
Loss from discontinued operations, net of tax			(1)
Loss from discontinued operations			(1)
Net loss	$ (43,613)	$ (78,729)	$ (47,235)
Loss per common share:
Basic loss per common share from continuing operations (in dollars per share)	$ (2.51)	$ (4.59)	$ (2.78)
Basic loss per common share (in dollars per share)	(2.51)	(4.59)	(2.78)
Diluted (loss) earnings per weighted average common share:
Diluted loss per common share from continuing operations (in dollars per share)	(2.51)	(4.59)	(2.78)
Diluted loss per common share (in dollars per share)	$ (2.51)	$ (4.59)	$ (2.78)
Mechanical Solutions
Revenue
Products revenue	$ 112,022	$ 122,593	$ 145,910
Cost of revenue
Products cost of revenue	96,515	113,853	122,769
Electrical Solutions
Revenue
Products revenue	75,559	93,057	77,280
Cost of revenue
Products cost of revenue	73,309	94,042	72,297
Services
Revenue
Services revenue	231,007	373,353	315,863
Cost of revenue
Services cost of revenue	$ 199,775	$ 328,511	$ 270,653