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Note 12 - Subsequent Events (Details Textual) - USD ($) $ in Thousands	Oct. 28, 2022	Oct. 21, 2022	Nov. 09, 2022	Sep. 30, 2022	Dec. 31, 2021
Debt Instrument, Face Amount				$ 483,461	$ 353,000
Forecast [Member]
Transfer of Financial Assets Accounted for as Sales, Amount Derecognized			$ 160,000
Transfer of Financial Assets Accounted for as Sales, Cash Proceeds Received for Assets Derecognized, Amount			98,800
Forecast [Member] \| Notes Payable, Other Payables [Member]
Debt Instrument, Face Amount			$ 100,000
Debt Instrument, Interest Rate, Stated Percentage			7.56%
Subsequent Event [Member] \| Emalex Biosciences, Inc. [Member] \| Equity Securities [Member]
Payments to Acquire Investments, Total		$ 400
Subsequent Event [Member] \| Robin Healthcare, Inc. [Member] \| Debt Investments [Member]
Payments to Acquire Investments, Total		$ 7,000
Subsequent Event [Member] \| Sonex Health, Inc. [Member] \| Debt Investments [Member]
Payments to Acquire Investments, Total	$ 2,500