CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Current assets
Cash and cash equivalents	$ 21,747	$ 11,084
Restricted cash	1,140	1,771
Contract receivables, net	18,863	13,053
Prepaid expenses and other current assets	2,052	2,499
Total current assets	43,802	28,407
Equipment, software and leasehold improvements	6,759	7,003
Accumulated depreciation	(5,527)	(5,407)
Equipment, software and leasehold improvements, net	1,232	1,596
Software development costs, net	982	1,145
Goodwill	5,612	5,612
Intangible assets, net	454	775
Long-term restricted cash	0	1,779
Other assets	1,574	47
Total assets	53,656	39,361
Current liabilities
Accounts payable	923	699
Accrued expenses	2,437	2,262
Accrued compensation	2,624	2,431
Billings in excess of revenue earned	21,444	9,229
Accrued warranty	1,137	1,614
Current contingent consideration	2,105	2,647
Other current liabilities	716	825
Total current liabilities	31,386	19,707
Contingent consideration	0	1,085
Other liabilities	1,149	201
Total liabilities	32,535	20,993
Commitments and contingencies
Stockholder's equity
Preferred stock $.01 par value, 2,000,000 shares authorized, no shares issued and outstanding	0	0
Common stock $.01 par value, 30,000,000 shares authorized, 20,433,608 shares issued and 18,834,697 shares outstanding in 2016, 19,510,770 shares issued and 17,911,859 shares outstanding in 2015	204	195
Additional paid-in capital	75,120	73,481
Accumulated deficit	(49,427)	(50,849)
Accumulated other comprehensive loss	(1,777)	(1,460)
Treasury stock at cost, 1,598,911 shares	(2,999)	(2,999)
Total stockholders' equity	21,121	18,368
Total liabilities and stockholders' equity	$ 53,656	$ 39,361