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Organization, Basis of Presentation, and Summary of Significant Accounting Policies Narrative (Details)
$ / shares in Units, $ in Thousands
 3 Months Ended
Aug. 14, 2017
USD ($)
$ / shares
shares
Sep. 30, 2017
USD ($)
Segment
Sep. 30, 2016
USD ($)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]      
Number of reportable segments | Segment   3  
Proceeds from issuance of Class A Common Stock in offering, net of underwriting discounts   $ 55,317 $ 0
Repayments of Long-term Debt $ 50,000 50,000 $ 15,000
Adjustments to Additional Paid in Capital, Stock Issued, Issuance Costs   $ 650  
Class A Common Stock | Follow-On Offering [Member]      
New Accounting Pronouncements or Change in Accounting Principle [Line Items]      
Issuance of Class A common stock for offerings, net of underwriting discounts (in shares) | shares 2,300,000    
Shares Issued, Price Per Share | $ / shares $ 24.05    
Proceeds from issuance of Class A Common Stock in offering, net of underwriting discounts $ 55,317    
Underwriting Discounts and Commissions 2,758    
Stock Sold by Company [Member] | Class A Common Stock | Follow-On Offering [Member]      
New Accounting Pronouncements or Change in Accounting Principle [Line Items]      
Proceeds from issuance of Class A Common Stock in offering, net of underwriting discounts $ 58,075    
Stock Sold by Selling Stockholders [Member] | Class A Common Stock      
New Accounting Pronouncements or Change in Accounting Principle [Line Items]      
Issuance of Class A common stock for offerings, net of underwriting discounts (in shares) | shares 300,000