Commitments and Contingencies - Minimum Aggregate Lease Payments (Detail) $ in Thousands	Dec. 31, 2015 USD ($)
Leases [Abstract]
Gross Rents, 2016	$ 28,255
Gross Rents, 2017	27,051
Gross Rents, 2018	26,455
Gross Rents, 2019	25,851
Gross Rents, 2020	25,311
Gross Rents, Thereafter	292,933
Gross Rents, Total lease commitments	425,856
Sublease Rents, 2016	2,534
Sublease Rents, 2017	2,527
Sublease Rents, 2018	1,972
Sublease Rents, 2019	1,799
Sublease Rents, 2020	1,396
Sublease Rents, Thereafter	8,458
Sublease Rents, Total lease commitments	18,686
Net Rents, 2016	25,721
Net Rents, 2017	24,524
Net Rents, 2018	24,483
Net Rents, 2019	24,052
Net Rents, 2020	23,915
Net Rents, Thereafter	284,475
Net Rents, Total lease commitments	$ 407,170