Leases (Lessee) - Summary of Lease Expense (Detail) - USD ($) $ in Thousands		3 Months Ended	6 Months Ended
		Jun. 30, 2019	Jun. 30, 2019
Lessee Lease Description [Line Items]
Operating lease cost	[1],[2]	$ 2,466	$ 4,562
Finance lease cost:
Total lease cost		1,602	2,832
Real Estate Depreciation and Amortization [Member]
Finance lease cost:
Amortization of right-of-use assets		13	26
Interest Expense [Member]
Finance lease cost:
Interest on lease liabilities		32	53
Interest and Other Income [Member]
Finance lease cost:
Sublease income		$ (909)	$ (1,809)

[1] $1.5 million and $3.1 million for the three and six months ended June 30, 2019, respectively, included in Property-related, with the remainder reflected in General and administrative expenses.

[2] Includes short-term leases.