Note 7 - Debt - Summary of Long-term Debt (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Long-term debt	$ 3,426	$ 2,845
Less debt discount	(82)	(119)
Less current portion	(110)	(2,528)
Long-term debt, net of debt discount and current portion	3,234	198
Unsecured Debt [Member]
Long-term debt	1,940
Subordinated Debt [Member] \| Subordinated Promissory Note 1 [Member]
Long-term debt	500	1,000
Subordinated Debt [Member] \| Subordinated Promissory Note 2 [Member]
Long-term debt	500	1,000
Subordinated Debt [Member] \| Subordinated Promissory Note 3 [Member]
Long-term debt	250	500
Real Estate Loan 1 [Member]
Long-term debt	180	218
Vehicle Loans for Trucks [Member]
Long-term debt	42	74
Note Payable To Seller Of Heat Waves [Member]
Long-term debt	$ 14	$ 53

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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