Leases - Balance Sheet Line Items (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Sep. 30, 2020	Sep. 30, 2019
Assets
Operating lease assets		$ 21,548	$ 8,080
Finance lease assets		1,599	2,591
Total leased assets		23,147	10,671
Current
Operating	$ 3,083	3,374	2,727
Finance		812	791
Noncurrent
Operating	11,239	19,185	5,846
Finance		1,799	2,611
Total lease liabilities		25,170	11,975
ROU assets derecognized through restructuring	$ 15,700
Finance lease accumulated amortization		$ (3,400)	$ (2,400)
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]		us-gaap:OtherAssetsNoncurrent
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]		us-gaap:OtherAssetsNoncurrent
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]		us-gaap:AccruedLiabilitiesCurrent
Finance Lease, Liability, Current, Statement of Financial Position [Extensible List]		us-gaap:LongTermDebtAndCapitalLeaseObligationsCurrent
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]		us-gaap:LongTermDebtAndCapitalLeaseObligations