Summary of Significant Accounting Policies - Recent Accounting Pronouncements (Details) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Jul. 01, 2019
Recent Accounting Pronouncements
Right-of-use asset	$ 6,015			$ 6,015
Lease liability	7,206			7,206
Income tax expense (benefit)	(5,308)		$ 2,647	(3,521)	$ (72,953)
ASU 2019-12 | Pro Forma [Member]
Recent Accounting Pronouncements
Income tax expense (benefit)	1,800	$ 0		1,800
ASU 2016-02 | Restatement
Recent Accounting Pronouncements
Right-of-use asset	7,900			7,900		$ 7,900
Lease liability	$ 7,900			$ 7,900		$ 7,900