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Organization, Basis of Presentation, and Summary of Significant Accounting Policies - Narrative (Details)
 1 Months Ended 12 Months Ended
Aug. 14, 2017
USD ($)
Aug. 31, 2017
USD ($)
Jun. 30, 2018
USD ($)
Segment
Jun. 30, 2017
USD ($)
institution
Jun. 30, 2016
USD ($)
Jul. 06, 2017
USD ($)
Organization, Basis of Presentation and Summary of Significant Accounting Policies [Line Items]            
Number of reportable segments | Segment     3      
Non-controlling interest     $ 5,502,000 $ 4,941,000 $ 4,679,000  
Accumulated other comprehensive loss     (1,984,000) (1,363,000)    
Additional paid in capital     $ (108,360,000) (48,328,000)    
Concentration risk, credit risk, line of credit period     14 days      
Allowance for doubtful accounts receivable, current     $ 40,000 44,000    
Capitalized offering costs     80,000 108,000    
Amount netted against proceeds of future offerings under shelf registration     650,000 0 0  
Impairment charges     0 0 0  
Impairment of intangible assets     $ 0 $ 0 0  
Number of financial institutions | institution       2    
Tax receivable agreement, percentage of realized cash saving in tax to be pass through     85.00%      
Maximum borrowing capacity       $ 160,000,000   $ 105,000,000
Debt outstanding     $ 110,000,000 55,000,000    
Amount of debt prepayment $ 50,000,000 $ 50,000,000 $ 50,000,000 $ 72,000,000 $ 6,500,000  
Unit Volume            
Organization, Basis of Presentation and Summary of Significant Accounting Policies [Line Items]            
Concentration risk percentage     30.40% 40.60% 31.90%  
Minimum            
Organization, Basis of Presentation and Summary of Significant Accounting Policies [Line Items]            
Intangible asset, useful life     5 years      
Maximum            
Organization, Basis of Presentation and Summary of Significant Accounting Policies [Line Items]            
Intangible asset, useful life     20 years      
Non-compete agreement            
Organization, Basis of Presentation and Summary of Significant Accounting Policies [Line Items]            
Intangible asset, useful life     10 years      
Immaterial Error Correction            
Organization, Basis of Presentation and Summary of Significant Accounting Policies [Line Items]            
Non-controlling interest       $ 1,869,000    
Accumulated other comprehensive loss       639,000    
Additional paid in capital       $ 2,508,000