Leases - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Jan. 01, 2017	Dec. 31, 2018	Dec. 30, 2018
Lessee Lease Description [Line Items]
Operating lease, option to extend, description	options to extend the leases for up to 5 years
Operating lease, option to extend	true
Operating Lease, ROU assets	$ 254,605
Operating lease, liability	266,199
Decrease to retained earnings	(99,044)			$ (98,787)
Derecognized deferred rent				$ (14,615)
Finance lease, ROU assets	13,200
Finance lease, accumulated amortization	6,000
Operating lease, ROU asset	268,400
Operating lease, accumulated amortization	13,800
Non-cash operating ROU assets	5,800
Non-cash operating lease liabilities	$ 5,800
Assignment fee received		$ 4,300
Remaining lease term	2 years
Deferred lease revenue	$ 1,700
Deferred lease revenue to be recognized in fiscal 2020	900
Deferred lease revenue to be recognized in fiscal 2021	$ 900
ASC 842 [Member]
Lessee Lease Description [Line Items]
Operating Lease, ROU assets			$ 262,900
Operating lease, liability			279,700
ASC 842 [Member] | Restatement Adjustment [Member]
Lessee Lease Description [Line Items]
Decrease to retained earnings			300
Derecognized deferred rent			9,200
Derecognized tenant improvement allowances			$ 7,600
Maximum [Member]
Lessee Lease Description [Line Items]
Operating lease term	12 years
Operating lease, option to extend	5 years
Finance lease term	4 years