Operating Leases - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Mar. 31, 2020	Mar. 31, 2020
Leases [Abstract]
Operating lease expense	$ 1,100	$ 2,300
Operating lease payments	$ 1,300	2,400
Increase (decrease) operating leases right-of-use asset		3,100
Increase (decrease) operating leases liability		$ 3,064