Note 5 - Debt - Summary of Long-term Debt (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Long-term debt	$ 14,434	$ 22,480
Less debt discount	(9)	(70)
Less current portion	(8,967)	(1,693)
Long-term debt, net of debt discount and current portion	5,458	20,717
Subordinated Promissory Note 1 [Member]
Long-term debt	0	1,250
Real Estate Loan 1 [Member]
Long-term debt	112	167
Vehicle Loans for Trucks [Member]
Long-term debt	0	31
Note Payable To Seller Of Heat Waves [Member]
Long-term debt	0	14
Subordinated Debt with Related Party [Member]
Long-term debt	220	0
Paycheck Protection Program CARES Act [Member]
Long-term debt	0	1,940
Revolving Credit Facility [Member]
Long-term debt	$ 14,102	$ 19,078