Quarterly report pursuant to Section 13 or 15(d)

Acquisitions (Schedule of Allocation of purchase price consideration) (Details)

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Acquisitions (Schedule of Allocation of purchase price consideration) (Details) - USD ($)
$ in Thousands
Mar. 31, 2018
Jun. 30, 2017
Allocation of purchase price consideration (in thousands):    
Goodwill $ 37,051 $ 24,753
Tri-State Technical Services [Member]    
Allocation of purchase price consideration (in thousands):    
Accounts receivable 3,416  
Inventory 2,747  
Other assets 1,565  
Property, plant and equipment 806  
Intangible assets 5,200  
Accounts payable and accrued expenses (2,220)  
Customer deposits (1,289)  
Total identifiable net assets 10,225  
Goodwill 4,980  
Total 15,205  
AA Acquisition [Member]    
Allocation of purchase price consideration (in thousands):    
Accounts receivable 2,834  
Inventory 2,833  
Other assets 2,950  
Property, plant and equipment 771  
Intangible assets 4,300  
Accounts payable and accrued expenses (1,197)  
Customer deposits (285)  
Total identifiable net assets 12,206  
Goodwill 7,318  
Total $ 19,524