BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 2,346	$ 2,375
Accounts receivable	1,275	1,444
Prepaid expenses and other current assets	395	405
Total current assets	4,016	4,224
Property and equipment, net	876	934
Deferred tax assets	280	1,195
Other assets	225	247
Total noncurrent assets	1,381	2,376
Total assets	5,397	6,600
Current liabilities:
Accounts payable and accrued expenses	1,613	1,468
Current portion of capital lease obligations	0	11
Deferred rent	26	37
Total current liabilities	1,639	1,516
Total liabilities	1,639	1,516
Commitments and contingencies
Stockholders' equity:
Preferred stock, $0.0001 par value; 2,000,000 shares authorized; none issued or outstanding	0	0
Common stock, $0.0001 par value; 50,000,000 shares authorized; 13,138,007 and 12,979,536 shares issued and 13,098,080 and 12,939,609 shares outstanding in 2016 and 2015, respectively	1	1
Additional paid-in capital	116,623	116,478
Accumulated deficit	(112,538)	(111,067)
Common stock in treasury, at cost; 24,371 shares in 2016 and 2015	(328)	(328)
Total stockholders' equity	3,758	5,084
Total liabilities and stockholders' equity	$ 5,397	$ 6,600