CONDENSED BALANCE SHEETS (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 2,503	$ 2,375
Accounts receivable	1,182	1,444
Prepaid expenses and other current assets	349	405
Total current assets	4,034	4,224
Property and equipment, net	1,127	934
Deferred tax assets	1,195	1,195
Other assets	224	247
Total assets	6,580	6,600
Current liabilities:
Accounts payable and accrued expenses	1,251	1,468
Current portion of capital lease obligations	0	11
Deferred rent	31	37
Total liabilities	1,282	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; 13,063,769 and 12,979,536 shares issued and 13,023,842 and 12,939,609 shares outstanding in 2016 and 2015, respectively	1	1
Additional paid-in capital	116,555	116,478
Accumulated deficit	(110,930)	(111,067)
Common stock in treasury, at cost; 24,371 shares in 2016 and 2015	(328)	(328)
Total stockholders' equity	5,298	5,084
Total liabilities and stockholders' equity	$ 6,580	$ 6,600