Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 5,868	$ 5,825
Accounts receivable, net of allowance for doubtful accounts of $20 and $18	4,629	4,136
Inventories	2,482	2,444
Other current assets	952	810
Total current assets	13,931	13,215
Property and equipment, net	14,887	15,444
Operating lease right-of-use assets	2,043	2,127
Intangible assets	484	527
Total assets	31,345	31,313
Current liabilities:
Accounts payable	1,672	826
Commodities payable	2,291	1,702
Accrued salary, wages and benefits	875	787
Accrued expenses	522	683
Operating lease liabilities, current portion	396	382
Due under insurance premium finance agreements	283	128
Due under factoring agreement	3,438	3,379
Finance lease liabilities, current portion	82	86
Long-term debt, current portion	1,217	1,183
Total current liabilities	10,776	9,156
Operating lease liabilities, less current portion	1,794	1,948
Finance lease liabilities, less current portion	86	100
Long-term debt, less current portion	1,035	1,356
Derivative warrant liability	429	258
Total liabilities	14,120	12,818
Commitments and contingencies
Shareholders' equity:
Preferred stock, 20,000,000 shares authorized: Series G, convertible, 3,000 shares authorized, stated value $150, 150 shares, issued and outstanding	75	75
Common stock, no par value, 150,000,000 shares authorized, 51,820,425 shares and 51,589,674 shares, issued and outstanding	326,525	326,279
Accumulated deficit	(309,375)	(307,859)
Total shareholders' equity	17,225	18,495
Total liabilities and shareholders' equity	$ 31,345	$ 31,313