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Note 1 - Nature of the Business and Summary of Significant Accounting Policies (Details Textual) - USD ($) $ in Thousands		3 Months Ended
	Mar. 10, 2022	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Payments to Acquire Equity Method Investments		$ 3,294	$ (0)
Equity Method Investments		27,840		$ 25,856
Payment, Tax Withholding, Share-Based Payment Arrangement		323	1,529
Credit Facility [Member]
Debt Issuance Costs, Net, Total		3,166
Credit Facility [Member] \| Revolving Credit Facility [Member]
Debt Issuance Costs, Net, Total			3,263
Draw Term Loan [Member]
Debt Issuance Costs, Net, Total			2,797
Amortization of Debt Issuance Costs		$ 485	$ 485
Restricted Stock Units (RSUs) [Member]
Share-Based Payment Arrangement, Shares Withheld for Tax Withholding Obligation (in shares)		3	10
Payment, Tax Withholding, Share-Based Payment Arrangement		$ 323	$ 1,529
Privately Held Company, Not Primary Beneficiary [Member]
Payments to Acquire Equity Method Investments	$ 3,300,000
Equity Method Investment, Ownership Percentage	19.00%
Equity Method Investments	$ 31,200,000