Basis and Summary of Significant Accounting Policies - Lease Merchandise (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Dec. 31, 2016	Sep. 30, 2016
Significant Accounting Policies [Line Items]
Lease merchandise salvage value percentage			0.00%
Lease agreement, lease period used as asset useful life	12 months
Lease Merchandise, net of Accumulated Depreciation and Allowances			$ 1,048,269	$ 999,381
Components of the allowance of leases merchandise write-offs:
Beginning Balance	$ 33,399	$ 33,405
Merchandise Written off, net of Recoveries	(101,924)	(100,058)
Provision for Write-offs	107,450	98,587
Ending Balance	$ 33,399	$ 33,405	38,925	33,399	$ 31,934
Merchandise on Lease
Significant Accounting Policies [Line Items]
Lease Merchandise, net of Accumulated Depreciation and Allowances			820,929	786,936
Merchandise on Lease | Minimum
Significant Accounting Policies [Line Items]
Lease merchandise useful life	12 months
Merchandise on Lease | Maximum
Significant Accounting Policies [Line Items]
Lease merchandise useful life	24 months
Merchandise Not on Lease
Significant Accounting Policies [Line Items]
Lease merchandise useful life	36 months
Lease Merchandise, net of Accumulated Depreciation and Allowances			$ 227,340	$ 212,445