Business Acquisition (Narrative) (Details) (Roehrig Engineering, Inc. "REI" [Member], USD $)	0 Months Ended
	Jun. 17, 2014
Roehrig Engineering, Inc. "REI" [Member]
Business Acquisition [Line Items]
Total estimated purchase price	$ 16,668,000
Cash paid	14,668,000
Estimated contingent consideration	2,000,000
Escrow Deposit	2,000,000
Identifiable assets acquired and the liabilities assumed	$ 16,900,000