Leases - Summary of Supplemental Balance Sheet Information Related to Leases (Detail) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Operating leases
Right-of-use assets from operating leases	$ 11,376	$ 13,607
Operating lease liabilities, current	$ 2,274	$ 2,610
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	us-gaap:AccountsPayableAndAccruedLiabilitiesMember	us-gaap:AccountsPayableAndAccruedLiabilitiesMember
Operating lease liabilities	$ 9,310	$ 11,116
Total operating lease liabilities	11,584	13,726
Finance leases
Finance leases right of use asset	$ 2,947	$ 3,255
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	us-gaap:PropertyPlantAndEquipmentMember	us-gaap:PropertyPlantAndEquipmentMember
Finance lease liabilities, current	$ 557	$ 516
Finance Lease, Liability, Current, Statement of Financial Position [Extensible List]	us-gaap:AccountsPayableAndAccruedLiabilitiesMember	us-gaap:AccountsPayableAndAccruedLiabilitiesMember
Finance lease liabilities, non-current	$ 6,783	$ 7,340
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	us-gaap:OtherLiabilitiesMember	us-gaap:OtherLiabilitiesMember
Total finance lease liabilities	$ 7,340	$ 7,856