Quarterly report pursuant to Section 13 or 15(d)

Acquisitions (Narrative) (Details)

v3.8.0.1
Acquisitions (Narrative) (Details) - USD ($)
1 Months Ended 9 Months Ended
Feb. 09, 2018
Oct. 31, 2017
Mar. 31, 2018
Business Acquisition [Line Items]      
Cash Consideration $ 8,100,000    
Stock Consideration 348,360    
Tri-State Technical Services [Member]      
Business Acquisition [Line Items]      
Cash Consideration   $ 7,950,000 $ 7,952,000
Stock Consideration   338,115 338,115
Acquisition legal and other professional fees     $ 137,000
Total purchase price for accounting purposes     17,000,000
Cash acquired     $ 1,800,000
Closing price     $ 26.70
Tri-State Technical Services [Member] | Goodwill [Member]      
Business Acquisition [Line Items]      
Amortized life     15 years
Tri-State Technical Services [Member] | Trade Names [Member]      
Business Acquisition [Line Items]      
Indefinite lived intangible assets acquired     $ 1,500,000
Tri-State Technical Services [Member] | Customer-related intangible assets [Member]      
Business Acquisition [Line Items]      
Finite lived intangible assets acquired     $ 3,700,000
Amortized life     10 years
AA Acquisition [Member]      
Business Acquisition [Line Items]      
Cash Consideration     $ 8,119,000
Stock Consideration     348,360
Acquisition legal and other professional fees     $ 160,000
Total purchase price for accounting purposes     20,400,000
Cash acquired     $ 900,000
Closing price     $ 35.45
AA Acquisition [Member] | Goodwill [Member]      
Business Acquisition [Line Items]      
Amortized life     15 years
AA Acquisition [Member] | Trade Names [Member]      
Business Acquisition [Line Items]      
Indefinite lived intangible assets acquired     $ 1,800,000
AA Acquisition [Member] | Customer-related intangible assets [Member]      
Business Acquisition [Line Items]      
Finite lived intangible assets acquired     $ 2,500,000
Amortized life     10 years