CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Current assets:
Cash	$ 1,132	$ 2,353
Accounts receivable, net	5,502	2,920
Employee retention tax credit receivable	669	650
Inventory	172	202
Contract assets	136	281
Prepaid expenses and other current assets	477	204
Total current assets	8,088	6,885
Property, plant and equipment, net	3,098	3,305
Intangibles, net	74	62
Right-of-use finance lease assets	71	275
Right-of-use operating lease assets	5,865	6,184
Other assets	223	179
Total assets	17,419	16,615
Current liabilities:
Accounts payable and accrued expenses	2,501	1,516
Contract liabilities	1,747	333
Current operating lease liabilities	448	863
Current finance lease liabilities	39	277
Total current liabilities	4,735	2,989
Operating lease liability, long-term	6,177	6,518
Finance lease liability, long-term	23	0
Total liabilities	10,935	9,507
Commitments and contingencies (Note 8)
Stockholders' equity:
Common stock, 24,500,000 shares authorized at $0.001 par value, 15,906,010 issued at September 30, 2023 and December 31, 2022	16	16
Additional paid-in capital	73,825	73,776
Treasury stock, 4,017,808 shares at September 30, 2023 and December 31, 2022, at cost	(3,135)	(3,135)
Accumulated deficit	(64,222)	(63,549)
Total stockholders' equity	6,484	7,108
Total liabilities and stockholders' equity	$ 17,419	$ 16,615