Quarterly report pursuant to Section 13 or 15(d)

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

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Acquisition (Schedule of Allocation of purchase price consideration) (Details) - USD ($)
$ in Thousands
Dec. 31, 2017
Jun. 30, 2017
Allocation of purchase price consideration (in thousands):    
Goodwill $ 29,808 $ 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 5,100  
Accounts payable and accrued expenses (2,220)  
Customer deposits (1,289)  
Total identifiable net assets 10,125  
Goodwill 5,080  
Total $ 15,205