Leases (Details) - USD ($)	3 Months Ended
	Dec. 31, 2019	Sep. 30, 2019
Leases [Abstract]
Operating right of use assets	$ 33,100,000	$ 0
Operating Lease, Cost	$ 3,500,000
Operating Lease, Weighted Average Remaining Lease Term	4 years 4 months 21 days
Operating Lease, Weighted Average Discount Rate, Percent	5.10%
Operating Lease, Payments	$ 2,700,000
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability	34,600,000
Operating lease liabilities	$ 36,200,000	$ 0