CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 4,043	$ 6,702
Contract receivables, net	12,529	10,494
Prepaid expenses and other current assets	4,781	1,554
Total current assets	21,353	18,750
Equipment, software and leasehold improvements, net	792	616
Software development costs, net	575	630
Goodwill	13,339	13,339
Intangible assets, net	3,305	4,234
Operating lease right-of-use assets, net	1,161	1,562
Other assets	58	59
Total assets	40,583	39,190
Current liabilities:
Line of credit	2,067	3,006
PPP Loan, current portion	0	5,034
Accounts payable	1,210	570
Accrued expenses	1,306	1,297
Accrued compensation	2,214	1,505
Billings in excess of revenue earned	4,461	5,285
Accrued warranty	560	665
Income taxes payable	1,597	1,621
Other current liabilities	1,202	2,498
Total current liabilities	14,617	21,481
PPP Loan, noncurrent portion	0	5,034
Operating lease liabilities noncurrent	1,036	1,831
Other noncurrent liabilities	256	339
Total liabilities	15,909	28,685
Commitments and contingencies (Note 16)
Stockholders' equity:
Preferred stock $0.01 par value; 2,000,000 shares authorized; no shares issued and outstanding	0	0
Common stock $0.01 par value; 60,000,000 shares authorized, 22,499,136 and 22,192,569 shares issued, 20,900,225 and 20,593,658 shares outstanding, respectively	225	222
Additional paid-in capital	80,280	79,687
Accumulated deficit	(52,727)	(65,191)
Accumulated other comprehensive loss	(105)	(1,214)
Treasury stock at cost, 1,598,911 shares	(2,999)	(2,999)
Total stockholders' equity	24,674	10,505
Total liabilities and stockholders' equity	$ 40,583	$ 39,190