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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 ($)	Mar. 31, 2021 USD ($)	Dec. 31, 2021 USD ($)
Point-of-Sale [Member]
Number of TDRs		17,886		14,919
Amount of TDRs on non-accrual status (in thousands)		$ 21,280		$ 17,152
Carrying value of TDRs (in thousands)		$ 14,330		11,173
Number of accounts		3,853	2,448
Loan balance at time of charge off (in thousands)		$ 5,897	$ 3,364
Point-of-Sale [Member] | Performing Financial Instruments [Member]
Carrying value of TDRs (in thousands)	[1]	11,917		8,797
Point-of-Sale [Member] | Nonperforming Financial Instruments [Member]
Carrying value of TDRs (in thousands)	[1]	$ 2,413		$ 2,376
Point-of-Sale [Member] | Extended Maturity [Member]
Number of TDRs		283		812
Amount of TDRs on non-accrual status (in thousands)		$ 424		$ 1,205
Direct-to-Consumer [Member]
Number of TDRs		52,652		39,322
Amount of TDRs on non-accrual status (in thousands)		$ 32,915		$ 25,154
Carrying value of TDRs (in thousands)		$ 20,961		15,502
Number of accounts		10,487	6,304
Loan balance at time of charge off (in thousands)		$ 8,721	$ 5,553
Direct-to-Consumer [Member] | Performing Financial Instruments [Member]
Carrying value of TDRs (in thousands)	[1]	18,992		13,387
Direct-to-Consumer [Member] | Nonperforming Financial Instruments [Member]
Carrying value of TDRs (in thousands)	[1]	$ 1,969		$ 2,115
Direct-to-Consumer [Member] | Extended Maturity [Member]
Number of TDRs		893		2,035
Amount of TDRs on non-accrual status (in thousands)		$ 678		$ 1,553
[1] "TDRs - Performing" include accounts that are current on all amounts owed, while "TDRs - Nonperforming" include all accounts with past due amounts owed.

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- Definition

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- Definition

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+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI https://asc.fasb.org/extlink&oid=123577603&loc=SL6953676-111524

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 34
-URI https://asc.fasb.org/extlink&oid=123577603&loc=SL6953682-111524

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+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
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-Paragraph 34
-Subparagraph (a)(2)
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