Leases - Additional Information (Details)	6 Months Ended
	Jun. 30, 2019 USD ($) office	Dec. 31, 2018 USD ($)
Lessee, Lease, Description [Line Items]
Operating Lease, Right-of-Use Asset	$ 166,612,000	$ 0
Operating Lease Right-of-use Asset Accumulated Amortization	$ 13,000,000
Weighted average remaining lease term (in years)	8 years 7 months 8 days
Weighted average discount rate	7.92%
Lessee, Operating Lease, Lease Not Yet Commenced, Liability	$ 14,000,000
Present value of lease liabilities	$ 210,255,000	$ 0
Minimum [Member]
Lessee, Lease, Description [Line Items]
Lessee, Operating Lease, Lease Not yet Commenced, Term of Contract	5 years
Maximum [Member]
Lessee, Lease, Description [Line Items]
Lease Expiration Date	Oct. 01, 2034
Lessee, Operating Lease, Lease Not yet Commenced, Term of Contract	11 years
UNITED STATES
Lessee, Lease, Description [Line Items]
Number of Stores | office	94
Real Estate [Member]
Lessee, Lease, Description [Line Items]
Operating Lease, Right-of-Use Asset	$ 163,600,000
Operating Lease Right-of-use Asset Accumulated Amortization	12,000,000
Present value of lease liabilities	207,300,000
Equipment [Member]
Lessee, Lease, Description [Line Items]
Operating Lease, Right-of-Use Asset	3,000,000
Operating Lease Right-of-use Asset Accumulated Amortization	939,000
Present value of lease liabilities	$ 3,000,000