Leases - Summary of Minimum Future Rent Payments Receivable under Noncancelable Operating Leases (Detail) $ in Thousands	Dec. 31, 2015 USD ($)
Operating Leased Assets [Line Items]
Operating Leases, Future Minimum Payments Due, Next Twelve Months	$ 2,123
Operating Leases, Future Minimum Payments Receivable, Current	213,828
Operating Leases, Future Minimum Payments Receivable, in Two Years	182,959
Operating Leases, Future Minimum Payments Receivable, in Three Years	156,134
Operating Leases, Future Minimum Payments Receivable, in Four Years	129,624
Operating Leases, Future Minimum Payments Receivable, in Five Years	105,951
Operating Leases, Future Minimum Payments Receivable, Thereafter	340,020
Operating Leases, Future Minimum Payments Receivable	1,128,516
Capital Leases, Future Minimum Payments Due, Next Twelve Months	651
Operating Leases, Future Minimum Payments, Due in Two Years	1,960
Capital Leases, Future Minimum Payments Due in Two Years	91
Operating Leases, Future Minimum Payments, Due in Three Years	1,785
Capital Leases, Future Minimum Payments Due in Three Years	74
Operating Leases, Future Minimum Payments, Due in Four Years	1,337
Capital Leases, Future Minimum Payments Due in Four Years	3
Operating Leases, Future Minimum Payments, Due in Five Years	6
Capital Leases, Future Minimum Payments Due in Five Years	3
Operating Leases, Future Minimum Payments, Due Thereafter	0
Capital Leases, Future Minimum Payments Due Thereafter	21
Operating Leases, Future Minimum Payments Due	7,211
Capital Leases, Future Minimum Payments Due	$ 843