CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Current assets:
Cash	$ 1,978	$ 2,030
Accounts receivable, net	3,880	4,228
Employee retention tax credit receivable	323	323
Inventory	525	430
Contract assets	2,023	480
Prepaid expenses and other current assets	412	358
Total current assets	9,141	7,849
Property, plant and equipment, net	2,849	2,968
Intangibles, net	70	72
Right-of-use operating lease assets	5,741	5,856
Right-of-use finance lease assets	82	103
Other assets	201	214
Total assets	18,084	17,062
Current liabilities:
Accounts payable and accrued expenses	3,558	3,353
Contract liabilities	1,733	1,377
Current operating lease liabilities	494	480
Current finance lease liabilities	56	74
Total current liabilities	5,841	5,284
Operating lease liability, long-term	6,006	6,136
Finance lease liability, long-term	24	24
Total liabilities	11,871	11,444
Commitments and contingencies (Note 8)
Stockholders' equity:
Common stock, 24,500,000 shares authorized at $0.001 par value, 15,906,010 issued at March 31, 2024 and December 31, 2023	16	16
Additional paid-in capital	73,691	73,840
Treasury stock, 3,717,808 and 4,017,808 shares at March 31, 2024 and December 31, 2023, respectively, at cost	(2,967)	(3,135)
Accumulated deficit	(64,527)	(65,103)
Total stockholders' equity	6,213	5,618
Total liabilities and stockholders' equity	$ 18,084	$ 17,062