Condensed Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Current Assets
Cash and cash equivalents	$ 8,943	$ 13,642
Money market funds	29,972	19,945
Short-term investments available for sale	60,251	70,113
Prepaid expenses and other current assets	193	277
Total Current Assets	99,359	103,977
Property and equipment, net of accumulated depreciation and amortization of $1,372 and $1,103, respectively	1,409	1,676
Total Assets	100,768	105,653
Current Liabilities
Accounts payable	1,054	958
Accrued expenses	690	586
Accrued payable to officers and former directors	86	86
Total Current Liabilities	$ 1,830	$ 1,630
Commitments and contingencies
Stockholders’ Equity
Preferred stock, $0.001 par value; 50,000,000 shares authorized, 1,694 shares issued and outstanding	$ 0	$ 0
Common stock, $0.000041666 par value; 150,000,000 shares authorized, 48,516,528 and 48,547,720 shares issued and outstanding, respectively	2	2
Common stock to be issued, 303,125 shares	245	245
Accumulated other comprehensive income	68	48
Additional paid-in capital	209,729	207,950
Accumulated deficit	(111,106)	(104,222)
Total Stockholders’ Equity	98,938	104,023
Total Liabilities and Stockholders’ Equity	$ 100,768	$ 105,653