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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 |  |

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