Commitments and Contingencies - (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2016 USD ($) store property Facility ground_lease	Dec. 31, 2015 USD ($) property	Dec. 31, 2014 USD ($)
Other Commitments [Line Items]
Number of owned stores that have leases | Facility	22
Estimate of possible loss | $	$ 5,600
Number of stores | property	99	171
Commitment To Acquire Retail Space [Member]
Other Commitments [Line Items]
Number of stores	4
Other commitment | $	$ 183,581
Number of store acquisitions expected to close	7
Commitment To Acquire Retail Space With Joint Venture Partners [Member]
Other Commitments [Line Items]
Number of stores	16
Other commitment | $	$ 74,708
Number of store acquisitions expected to close	8
Number of store acquisitions expected to close after current fiscal year	8
Construction in Progress [Member] | Commitment To Acquire Retail Space [Member]
Other Commitments [Line Items]
Number of stores	12
Ground Leases that Include Contingent Rental Payments [Member]
Other Commitments [Line Items]
Litigation liabilities | ground_lease	3
Expense related to ground leases | $	$ 4,578	$ 3,858	$ 3,406