CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 11,763	$ 19,111
Restricted cash	647	960
Contract receivables, net	18,757	13,997
Prepaid expenses and other current assets	2,680	2,795
Total current assets	33,847	36,863
Equipment, software, and leasehold improvements	5,102	4,782
Accumulated depreciation	(3,828)	(3,719)
Equipment, software, and leasehold improvements, net	1,274	1,063
Software development costs, net	677	690
Goodwill	8,431	8,431
Intangible assets, net	2,456	2,604
Deferred tax assets	6,336	7,167
Other assets	37	37
Total assets	53,058	56,855
Current liabilities:
Accounts payable	557	1,251
Accrued expenses	3,523	2,276
Accrued compensation	2,975	2,866
Billings in excess of revenue earned	12,592	14,543
Accrued warranty	1,186	1,433
Current contingent consideration	0	1,701
Other current liabilities	1,410	1,182
Total current liabilities	22,243	25,252
Other liabilities	1,453	1,931
Total liabilities	23,696	27,183
Commitments and contingencies
Stockholders' equity:
Preferred stock $.01 par value, 2,000,000 shares authorized, no shares issued and outstanding	0	0
Common stock $0.01 par value, 30,000,000 shares authorized, 21,215,884 and 21,024,395 shares issued and 19,616,973 and 19,425,484 shares outstanding in 2018 and 2017	212	210
Additional paid-in capital	77,376	76,802
Accumulated deficit	(43,711)	(42,870)
Accumulated other comprehensive loss	(1,516)	(1,471)
Treasury stock at cost, 1,598,911 shares	(2,999)	(2,999)
Total stockholders' equity	29,362	29,672
Total liabilities and stockholders' equity	$ 53,058	$ 56,855