Leases - Supplemental Balance Sheet Information Related to Operating and Financing Leases (Detail) $ in Thousands	Sep. 30, 2021 USD ($)
Leases [Abstract]
Right-of-use lease assets - operating	$ 5,286
Right-of-use lease assets - finance	$ 23,366
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	Right-of-use lease asset, net
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	Right-of-use lease asset, net
Lease Liability - operating	$ 6,844
Operating Lease, Liability, Statement of Financial Position [Extensible List]	Lease liability
Lease liability - finance	$ 25,120
Finance Lease, Liability, Statement of Financial Position [Extensible List]	Lease liability