Note 7 - Debt - Summary of Long-term Debt (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Long-term debt	$ 6,460
Long-term debt, gross	6,460	$ 2,934
Less debt discount	(167)	(271)
Less current portion	(4,149)	(182)
Long-term debt, net of current portion	2,144	2,481
Subordinated Debt [Member] \| Seller Subordinated Note [Member]
Long-term debt	4,000
Subordinated Debt [Member] \| Subordinated Promissory Note 1 [Member]
Long-term debt	1,000	1,500
Subordinated Debt [Member] \| Subordinated Promissory Note 2 [Member]
Long-term debt	1,000	1,000
Real Estate Loan 1 [Member]
Long-term debt	258	309
Vehicle Loans for Trucks [Member]
Long-term debt	113
Note Payable To Seller Of Heat Waves [Member]
Long-term debt	$ 89	$ 125

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

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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 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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