Leases - Summary of Minimum Future Capital and Operating Leases Payments (Detail) $ in Thousands	Dec. 31, 2018 USD ($)
Operating Leased Assets [Line Items]
Operating Leases, Future Minimum Payments Receivable, in Two Years	$ 166,056
Equipment [Member]
Operating Leased Assets [Line Items]
Operating Leases, Future Minimum Payments Due, Next Twelve Months	1,823
Operating Leases, Future Minimum Payments, Due in Two Years	461
Operating Leases, Future Minimum Payments, Due in Three Years	272
Operating Leases, Future Minimum Payments, Due in Four Years	89
Operating Leases, Future Minimum Payments, Due in Five Years	9
Operating Leases, Future Minimum Payments, Due Thereafter	0
Operating Leases, Future Minimum Payments Due	2,654
Land [Member]
Operating Leased Assets [Line Items]
Operating Leases, Future Minimum Payments Due, Next Twelve Months	1,184
Operating Leases, Future Minimum Payments, Due in Three Years	1,584
Operating Leases, Future Minimum Payments, Due in Four Years	1,584
Operating Leases, Future Minimum Payments, Due in Five Years	1,584
Operating Leases, Future Minimum Payments, Due Thereafter	33,959
Operating Leases, Future Minimum Payments Due	41,279
Operating Leases, Future Minimum Payments Receivable, in Two Years	$ 1,384