Leases (Lessee) - Summary of Lease Expense (Detail) - USD ($) $ in Thousands		3 Months Ended	9 Months Ended
		Sep. 30, 2019	Sep. 30, 2019
Lessee Lease Description [Line Items]
Operating lease cost	[1],[2]	$ 2,163	$ 6,725
Finance lease cost:
Total lease cost		1,335	4,166
Real Estate Depreciation and Amortization [Member]
Finance lease cost:
Amortization of right-of-use assets		13	38
Interest Expense [Member]
Finance lease cost:
Interest on lease liabilities		32	85
Interest and Other Income [Member]
Finance lease cost:
Sublease income		$ (873)	$ (2,682)

[1] $1.4 million and $4.5 million for the three and nine months ended September 30, 2019, respectively, included in Property-related, with the remainder reflected in General and administrative expenses.

[2] Includes short-term leases.