Business Combination (Details) - USD ($) $ in Thousands		3 Months Ended
	May. 21, 2015	Dec. 31, 2015	Dec. 31, 2014
Business Acquisition [Line Items]
Cash Paid for Acquisition		$ 7,538	$ 0
Business Acquisition Shanahan and Calumet [Member]
Business Acquisition [Line Items]
Name of Acquired Business		Calumet Armature & Electric, LLC (“Calumet”) & Shanahan Mechanical and Electrical, Inc. (“Shanahan”)
Total Consideration Transferred		$ 8,425
Cash Purchase Consideration		8,013
Cash Paid for Acquisition		7,338
Additional Consideration To Be Paid		675
Minimum Contingent Consideration Value		412
Maximum Contingent Consideration Value		$ 2,250
Business Acquisition Southern Rewind [Member]
Business Acquisition [Line Items]
Name of Acquired Business		Southern Industrial Sales and Services, Inc. (“Southern Rewinding”)
Discription of Acquired Business		a Columbus, Georgia-based motor repair and related field services company
Date of Acquisition Agreement	May 21, 2015
Total Consideration Transferred	$ 3,937
Cash Purchase Consideration	3,137
Cash Paid for Acquisition		$ 200
Additional Consideration To Be Paid	800	$ 600
Working Capital Transfer	$ 1,065