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Note 2 - Significant Accounting Policies and Condensed Financial Statement Components - Summary of Aging of Delinquent Loans and Fees Receivable (Details) - USD ($) $ in Millions	Jun. 30, 2025	Dec. 31, 2024
Financing receivable, gross	$ 106.6	$ 109.0
Balance of loans greater than 90-days delinquent still accruing interest and fees	2.4	3.7
Loans at Amortized Cost [Member]
Financing receivable, gross	106.6	109.0
Financial Asset, 30 to 59 Days Past Due [Member]
Financing receivable, gross	6.6	7.6
Financial Asset, 60 to 89 Days Past Due [Member]
Financing receivable, gross	2.4	3.2
Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing receivable, gross	3.7	4.7
Financial Asset, Past Due [Member]
Financing receivable, gross	12.7	15.5
Financial Asset, Not Past Due [Member]
Financing receivable, gross	$ 93.9	$ 93.5

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Amortized cost of financing receivable 90 days or more past due and still accruing. Excludes net investment in lease.

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