Summary of Significant Accounting Policies - Additional Information (Details) - USD ($)	Apr. 01, 2019	Sep. 30, 2019
Accounting Policies [Line Items]
Operating lease right-of-use assets		$ 38,230,000
Operating lease liabilities		51,569,000
Operating lease liabilities, net of current		$ 41,622,000
ASC 842
Accounting Policies [Line Items]
Operating lease right-of-use assets	$ 38,784,000
Operating lease liabilities	8,873,000
Operating lease liabilities, net of current	42,114,000
Reductions to other current liabilities	2,342,000
Reductions to other noncurrent liabilities	9,861,000
Cumulative-effect adjustment to retained earnings	$ 0