Acquisitions (Details) - Western Pacific Enterprises [Member] - USD ($) $ in Thousands	Jun. 30, 2017	Oct. 28, 2016
Business Acquisition [Line Items]
Total consideration, net of net asset adjustments	$ 11,283
Accounts receivable, net	20,249
Costs and estimated earnings in excess of billings on uncompleted contracts	1,610
Other current assets	8
Property and equipment	4,108
Accounts payable	(10,125)
Billings in excess of costs and estimated earnings on uncompleted contracts	(3,020)
Other current liabilities	(2,294)
Net identifiable assets	10,536
Unallocated intangible assets	747
Scenario, Previously Reported [Member]
Business Acquisition [Line Items]
Total consideration, net of net asset adjustments		$ 11,283
Accounts receivable, net		20,249
Costs and estimated earnings in excess of billings on uncompleted contracts		1,610
Other current assets		8
Property and equipment		4,108
Accounts payable		(10,125)
Billings in excess of costs and estimated earnings on uncompleted contracts		(3,020)
Other current liabilities		(2,294)
Net identifiable assets		10,536
Unallocated intangible assets		$ 747
Restatement Adjustment [Member]
Business Acquisition [Line Items]
Total consideration, net of net asset adjustments	0
Accounts receivable, net	0
Costs and estimated earnings in excess of billings on uncompleted contracts	0
Other current assets	0
Property and equipment	0
Accounts payable	0
Billings in excess of costs and estimated earnings on uncompleted contracts	0
Other current liabilities	0
Net identifiable assets	0
Unallocated intangible assets	$ 0