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Business Acquisitions, Goodwill and Other Intangible Assets - Narrative (Details) - USD ($)
3 Months Ended 9 Months Ended
Mar. 31, 2017
Nov. 30, 2015
Mar. 31, 2017
Mar. 25, 2016
Mar. 31, 2017
Mar. 25, 2016
Jun. 30, 2016
Mar. 31, 2016
Business Acquisition [Line Items]                
Goodwill $ 91,054,000   $ 91,054,000   $ 91,054,000   $ 75,337,000  
Amortization period of identifiable intangible assets         7 years      
Amortization of Intangible Assets     2,813,000 $ 3,162,000 $ 8,146,000 $ 5,078,000    
Caltrop [Member] [Domain]                
Business Acquisition [Line Items]                
Purchase price 28,177,000              
Cash paid 16,310,000              
Second cash payment 8,500,000   8,500,000   8,500,000      
Business Combination, Net Working Capital Adjustment 3,367,000   3,367,000   3,367,000      
Goodwill 15,717,000   15,717,000   15,717,000      
Total identifiable intangible assets 7,600,000   7,600,000   $ 7,600,000      
Oil and Gas                
Business Acquisition [Line Items]                
Purchase price   $ 124,498,000            
Cash paid   119,955,000            
Second cash payment   7,500,000            
Business Combination, Net Working Capital Adjustment   2,957,000           $ 2,354,000
Goodwill   60,294,000            
Total identifiable intangible assets   44,500,000            
Cash and cash equivalents   355,000            
Contract backlog | Oil and Gas                
Business Acquisition [Line Items]                
Intangible asset, useful life         1 year      
Customer relationships and backlog | Oil and Gas                
Business Acquisition [Line Items]                
Total identifiable intangible assets   43,500,000            
Internally developed software | Oil and Gas                
Business Acquisition [Line Items]                
Total identifiable intangible assets   $ 1,000,000            
Intangible asset, useful life         5 years      
Amortization period of identifiable intangible assets         5 years      
Customer relationships                
Business Acquisition [Line Items]                
Amortization period of identifiable intangible assets         7 years      
Customer relationships | Oil and Gas                
Business Acquisition [Line Items]                
Amortization period of identifiable intangible assets         6 years      
Minimum | Customer relationships | Oil and Gas                
Business Acquisition [Line Items]                
Intangible asset, useful life         12 years      
Maximum | Customer relationships | Oil and Gas                
Business Acquisition [Line Items]                
Intangible asset, useful life         15 years      
Oil and Gas                
Business Acquisition [Line Items]                
Goodwill $ 38,313,000   $ 38,313,000   $ 38,313,000   $ 38,313,000