Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($)	Mar. 31, 2023	Dec. 31, 2022
Current assets
Cash and cash equivalents	$ 11,001,000	$ 14,365,000
Accounts receivable, net	2,368,000	3,788,000
Contract assets	3,706,000	2,170,000
Inventories, net	2,801,000	2,538,000
Other current assets	678,000	797,000
Total current assets	20,554,000	23,658,000
Employee retention credit receivable	1,529,000	1,529,000
Property, plant and equipment, net	12,576,000	12,596,000
Intangible assets, net	115,000	119,000
Other assets	10,000	10,000
Total assets	34,784,000	37,912,000
Current liabilities
Accounts payable	1,429,000	1,454
Accrued expenses	2,120,000	2,591,000
Current maturities of long-term debt	78,000	77,000
Contract liabilities	1,261,000	4,042,000
Total current liabilities	4,888,000	8,164,000
Long-term debt, net of current portion	329,000	349,000
Total liabilities	5,217,000	8,513,000
Commitments and Contingencies
Stockholders’ equity:
Common stock - $0.01 par value – 20,000,000 shares authorized; issued and outstanding 6,778,438 at March 31, 2023 and 6,760,938 at December 31, 2022	67,000	67,000
Additional paid-in capital	27,920,000	27,712,000
Retained earnings	1,580,000	1,620,000
Total stockholders’ equity	29,567,000	29,399,000
Total liabilities and stockholders’ equity	$ 34,784,000	$ 37,912,000