Debt and Financing Lease Obligations - Asset Backed Notes (Details) - USD ($) $ in Thousands					9 Months Ended
	Oct. 16, 2020	Nov. 26, 2019	Apr. 24, 2019	Aug. 15, 2018	Oct. 31, 2020
Debt Instrument [Line Items]
Original Principal Amount					$ 1,466,150
Original Net Proceeds					1,456,161
Current Principal Amount					574,609
2018-A VIE Class A Notes [Member]
Debt Instrument [Line Items]
Original Principal Amount					219,200
Original Net Proceeds				$ 217,832
Current Principal Amount					$ 2,029
Contractual Interest Rate					3.25%
Effective Interest Rate					5.03%
2018-A VIE Class B Notes [Member]
Debt Instrument [Line Items]
Original Principal Amount					$ 69,550
Original Net Proceeds				69,020
Current Principal Amount					$ 2,861
Contractual Interest Rate					4.65%
Effective Interest Rate					5.65%
2018-A VIE Class C Notes [Member]
Debt Instrument [Line Items]
Original Principal Amount					$ 69,550
Original Net Proceeds				$ 68,850
Current Principal Amount					$ 2,861
Contractual Interest Rate					6.02%
Effective Interest Rate					7.02%
2019-A VIE Class A Notes [Member]
Debt Instrument [Line Items]
Original Principal Amount					$ 254,530
Original Net Proceeds			$ 253,026
Current Principal Amount					$ 27,393
Contractual Interest Rate					3.40%
Effective Interest Rate					4.41%
2019-A VIE Class B Notes [Member]
Debt Instrument [Line Items]
Original Principal Amount					$ 64,750
Original Net Proceeds			64,276
Current Principal Amount					$ 35,180
Contractual Interest Rate					4.36%
Effective Interest Rate					4.87%
2019-A VIE Class C Notes [Member]
Debt Instrument [Line Items]
Original Principal Amount					$ 62,510
Original Net Proceeds			$ 61,898
Current Principal Amount					$ 33,963
Contractual Interest Rate					5.29%
Effective Interest Rate					5.81%
2019-B VIE Class A Notes [Member]
Debt Instrument [Line Items]
Original Principal Amount					$ 317,150
Original Net Proceeds		$ 315,417
Current Principal Amount					$ 61,412
Contractual Interest Rate					2.66%
Effective Interest Rate					4.34%
2019-B VIE Class B Notes [Member]
Debt Instrument [Line Items]
Original Principal Amount					$ 85,540
Original Net Proceeds		84,916
Current Principal Amount					$ 85,540
Contractual Interest Rate					3.62%
Effective Interest Rate					4.22%
2019-B VIE Class C Notes [Member]
Debt Instrument [Line Items]
Original Principal Amount					$ 83,270
Original Net Proceeds		$ 82,456
Current Principal Amount					$ 83,270
Contractual Interest Rate					4.60%
Effective Interest Rate					5.02%
2020-A VIE Class A, B, C Notes [Member]
Debt Instrument [Line Items]
Original Principal Amount	$ 240,100
Original Net Proceeds	238,500
2020-A VIE Class A Notes [Member]
Debt Instrument [Line Items]
Original Principal Amount	174,900				$ 174,900
Original Net Proceeds	173,716
Current Principal Amount					$ 174,900
Contractual Interest Rate					1.71%
Effective Interest Rate					3.58%
2020-A VIE Class B Notes [Member]
Debt Instrument [Line Items]
Original Principal Amount	65,200				$ 65,200
Original Net Proceeds	64,754
Current Principal Amount					$ 65,200
Contractual Interest Rate					4.27%
Effective Interest Rate					5.86%
2020-A VIE Class C Notes [Member]
Debt Instrument [Line Items]
Original Principal Amount	$ 62,900
Contractual Interest Rate	7.10%
Asset-backed Securities [Member]
Debt Instrument [Line Items]
Monthly fee percentage on outstanding balance					4.75%