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Note 2 - Significant Accounting Policies and Consolidated Financial Statement Components - Summary of Troubled Debt Restructurings (Details) $ in Thousands		3 Months Ended
		Mar. 31, 2022 USD ($)	Dec. 31, 2022 USD ($)
Amount of TDRs on non-accrual status (in thousands)		$ 89,500
Private Label Credit [Member]
Number of TDRs			24,594
Amount of TDRs on non-accrual status (in thousands)			$ 31,350
Carrying value of TDRs (in thousands)			18,827
Number of accounts		3,853
Loan balance at time of charge off (in thousands)		$ 5,897
Private Label Credit [Member] | Performing Financial Instruments [Member]
Carrying value of TDRs (in thousands)	[1]		15,001
Private Label Credit [Member] | Nonperforming Financial Instruments [Member]
Carrying value of TDRs (in thousands)	[1]		$ 3,826
Private Label Credit [Member] | Extended Maturity [Member]
Number of TDRs			2,499
Amount of TDRs on non-accrual status (in thousands)			$ 4,606
General Purpose Credit Card [Member]
Number of TDRs			171,729
Amount of TDRs on non-accrual status (in thousands)			$ 119,785
Carrying value of TDRs (in thousands)			70,519
Number of accounts		10,487
Loan balance at time of charge off (in thousands)		$ 8,721
General Purpose Credit Card [Member] | Performing Financial Instruments [Member]
Carrying value of TDRs (in thousands)	[1]		59,735
General Purpose Credit Card [Member] | Nonperforming Financial Instruments [Member]
Carrying value of TDRs (in thousands)	[1]		$ 10,784
General Purpose Credit Card [Member] | Extended Maturity [Member]
Number of TDRs			28,598
Amount of TDRs on non-accrual status (in thousands)			$ 24,440
[1] TDRs - Performing” include accounts that are current on all amounts owed, while “TDRs - Nonperforming” include all accounts with past due amounts owed

X

- Definition

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+ References

No definition available.

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- Definition

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+ References

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- Definition

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+ References

No definition available.

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- Definition

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+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
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- Definition

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+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
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