Leases - Future Minimum Rentals to be Received Under Lease Obligations (Detail) $ in Thousands	Dec. 31, 2016 USD ($)
Schedule of Leases Future Minimum Payments Receivable [Line Items]
Operating Lease, 2017	$ 7,530
Operating Lease, 2018	5,503
Operating Lease, 2019	3,448
Operating Lease, 2020	2,534
Operating Lease, 2021	1,548
Operating Lease, Thereafter	1,957
Operating Lease, Total	22,520
Owned Property [Member]
Schedule of Leases Future Minimum Payments Receivable [Line Items]
Operating Lease, 2017	3,158
Operating Lease, 2018	2,119
Operating Lease, 2019	1,326
Operating Lease, 2020	963
Operating Lease, 2021	694
Operating Lease, Thereafter	839
Operating Lease, Total	9,099
Leased Property [Member]
Schedule of Leases Future Minimum Payments Receivable [Line Items]
Operating Lease, 2017	4,372
Operating Lease, 2018	3,384
Operating Lease, 2019	2,122
Operating Lease, 2020	1,571
Operating Lease, 2021	854
Operating Lease, Thereafter	1,118
Operating Lease, Total	$ 13,421