CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Current assets:
Cash	$ 2,347	$ 2,353
Accounts receivable, net	3,660	2,920
Employee retention tax credit receivable	650	650
Inventory	195	202
Contract assets	54	281
Right-of-use finance lease assets	109	275
Prepaid expenses and other current assets	355	204
Total current assets	7,370	6,885
Property, plant and equipment, net	3,092	3,305
Intangibles, net	74	62
Right-of-use operating lease assets	5,971	6,184
Other assets	226	179
Total assets	16,733	16,615
Current liabilities:
Accounts payable and accrued expenses	1,576	1,516
Contract liabilities	940	333
Current operating lease liabilities	1,194	863
Current finance lease liabilities	112	277
Total current liabilities	3,822	2,989
Operating lease liability, long-term	6,293	6,518
Total liabilities	10,115	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 June 30, 2023 and December 31, 2022	16	16
Additional paid-in capital	73,816	73,776
Treasury stock, 4,017,808 shares at June 30, 2023 and December 31, 2022, at cost	(3,135)	(3,135)
Accumulated deficit	(64,079)	(63,549)
Total stockholders' equity	6,618	7,108
Total liabilities and stockholders' equity	$ 16,733	$ 16,615