Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 3,941	$ 5,825
Accounts receivable, net of allowance for doubtful accounts of $27 and $18	3,703	4,136
Inventories	2,378	2,444
Other current assets	1,046	810
Total current assets	11,068	13,215
Property and equipment, net	14,207	15,444
Operating lease right-of-use assets	1,778	2,127
Intangible assets	380	527
Total assets	27,433	31,313
Current liabilities:
Accounts payable	1,232	826
Commodities payable	1,546	1,702
Accrued salary, wages and benefits	696	787
Accrued expenses	1,124	683
Operating lease liabilities, current portion	391	382
Due under line of credit	3,150	3,379
Due under insurance premium finance agreements	185	128
Finance lease liabilities, current portion	125	86
Long-term debt, current portion	996	1,183
Total current liabilities	11,364	9,156
Operating lease liabilities, less current portion	1,557	1,948
Finance lease liabilities, less current portion	325	100
Long-term debt, less current portion	1,296	1,356
Derivative warrant liability	69	258
Total liabilities	14,524	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, 15,000,000 shares authorized, 6,309,509 shares and 5,158,967 shares, issued and outstanding	328,551	326,279
Accumulated deficit	(315,717)	(307,859)
Total shareholders' equity	12,909	18,495
Total liabilities and shareholders' equity	27,433	31,313
Line of Credit With Bank [Member]
Current liabilities:
Due under line of credit	$ 1,832	$ 0