Leases - Schedule of Lease-related Assets and Liabilities (Detail) $ in Thousands	Sep. 30, 2019 USD ($)
Assets
Right-of-use assets - operating	$ 22,724
Right-of-use assets - finance	1,043
Total lease assets	23,767
Liabilities
Lease liability - operating	23,351
Lease liability - finance	4,335
Total lease liabilities	$ 27,686