Acquisitions (Details) - USD ($) $ in Thousands		12 Months Ended
	Apr. 13, 2015	Dec. 31, 2015
Business Acquisition [Line Items]
Total consideration		$ 11,374
Accounts receivable		10,662
Costs and estimated earnings in excess of billings on uncompleted contracts		2,102
Other current assets		59
Property and equipment		2,031
Intangible assets		2,068
Accounts payable		(3,621)
Billings in excess of costs and estimated earnings on uncompleted contracts		(1,490)
Other current liabilities		(437)
Net identifiable assets		11,374
Goodwill		0
Scenario, Previously Reported [Member]
Business Acquisition [Line Items]
Total consideration	$ 11,374
Accounts receivable	10,662
Costs and estimated earnings in excess of billings on uncompleted contracts	2,102
Other current assets	59
Property and equipment	1,778
Intangible assets	0
Accounts payable	(3,621)
Billings in excess of costs and estimated earnings on uncompleted contracts	(1,490)
Other current liabilities	(437)
Net identifiable assets	9,053
Goodwill	$ 2,321
Restatement Adjustment [Member]
Business Acquisition [Line Items]
Total consideration		0
Accounts receivable		0
Costs and estimated earnings in excess of billings on uncompleted contracts		0
Other current assets		0
Property and equipment		253
Intangible assets		2,068
Accounts payable		0
Billings in excess of costs and estimated earnings on uncompleted contracts		0
Other current liabilities		0
Net identifiable assets		2,321
Goodwill		$ (2,321)