Note 6 - Debt - Summary of Long-term Debt (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Long-term debt	$ 17,295	$ 22,480
Less debt discount		(70)
Less current portion	(1,407)	(1,693)
Long-term debt, net of debt discount and current portion	15,888	20,717
Unsecured Debt [Member]
Long-term debt	1,940	1,940
Subordinated Debt [Member] \| Subordinated Promissory Note 1 [Member]
Long-term debt		1,250
Real Estate Loan 1 [Member]
Long-term debt	153	167
Vehicle Loans for Trucks [Member]
Long-term debt	20	31
Note Payable To Seller Of Heat Waves [Member]
Long-term debt	14	14
Revolving Credit Facility [Member]
Long-term debt	$ 15,168	$ 19,078

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt, classified as current.

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Amount, after accumulated amortization, of debt discount.

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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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Amount after unamortized (discount) premium and debt issuance costs of long-term debt classified as noncurrent and excluding amounts to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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