Note 14 - Debt - Schedule of Debt (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Debt Instrument	$ 31,492,000
Unamortized discount and deferred issuance costs	(1,763,000)	$ (1,538,000)
Total debt	29,729,000	26,729,000
Less: current portion	(2,166,000)	(1,069,000)
Total long-term debt	27,563,000	25,660,000
Notes Payable to Banks [Member]
Debt Instrument	29,508,000	26,608,000
Equipment Trust Certificate [Member]
Debt Instrument	848,000	885,000
Commercial Paper [Member]
Debt Instrument	400,000	75,000
Finance Lease [Member]
Debt Instrument	336,000	449,000
Secured Debt [Member]
Debt Instrument	300,000	0
Loans Payable [Member]
Debt Instrument	$ 100,000	$ 250,000

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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