Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Current assets
Cash and cash equivalents	$ 13,033	$ 14,365
Accounts receivable, net	2,156	3,788
Contract assets	2,951	2,170
Inventories, net	4,150	2,538
Employee retention credit receivable	1,529	0
Other current assets	543	797
Total current assets	24,362	23,658
Employee retention credit receivable	0	1,529
Property, plant and equipment, net	12,300	12,596
Intangible assets, net	111	119
Other assets	10	10
Total assets	36,783	37,912
Current liabilities
Accounts payable	1,307	1,454
Accrued expenses	1,667	2,591
Current maturities of long-term debt	79	77
Contract liabilities	4,702	4,042
Total current liabilities	7,755	8,164
Long-term debt, net of current portion	309	349
Total liabilities	8,064	8,513
Common stock - $0.01 par value – 20,000,000 shares authorized; issued and outstanding 6,779,063 at June 30, 2023 and 6,760,938 at December 31, 2022	67	67
Additional paid-in capital	28,185	27,712
Retained earnings	467	1,620
Total stockholders’ equity	28,719	29,399
Total liabilities and stockholders’ equity	$ 36,783	$ 37,912