Leases (Lessee) - Summary of Lease Expense (Parenthetical) (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
Property-related [Member]
Lessee Lease Description [Line Items]
Operating lease cost		$ 1,500	$ 3,100

[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.