Leases (Lessee) - Summary of Lease Expense (Detail) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Lessee Lease Description [Line Items]
Operating lease cost	[1],[2]	$ 9,262
Finance lease cost:
Sublease income			$ (4,300)	$ (6,600)
Total lease cost		5,952
Real Estate Depreciation and Amortization [Member]
Finance lease cost:
Amortization of right-of-use assets		51
Interest [Member]
Finance lease cost:
Interest on lease liabilities		117
Other [Member]
Finance lease cost:
Sublease income		$ (3,478)

[1] $5.8 million included in “Property-related”, with the remainder reflected in the “General and administrative” line of our consolidated statements of net income.

[2] Includes short-term leases.