Commitments and Contingencies - Additional Information (Detail) $ in Thousands	6 Months Ended
	Jun. 30, 2017 USD ($) store
Commitment to acquire retail space [Member]
Commitments And Contingencies [Line Items]
Number of real estate properties to be acquired	3
Purchase price | $	$ 166,631
Number of stores scheduled to be closed	5
Commitment to acquire retail space [Member] | Construction in progress [Member]
Commitments And Contingencies [Line Items]
Number of real estate properties to be acquired	12
Commitment to acquire real estate with joint venture partners [Member]
Commitments And Contingencies [Line Items]
Number of real estate properties to be acquired	24
Purchase price | $	$ 134,386
Number of stores scheduled to be closed	11
Number of stores expected to be closed	13