CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 86,585	$ 110,988
Short-term investments	9,026	13,930
Accounts and other receivables	1,865	1,051
Prepaid expenses and other current assets	11,988	9,856
Total current assets	109,464	135,825
Property and equipment, net	1,768	2,343
Other assets, net	16,510	7,827
Total assets	127,742	145,995
Current liabilities:
Accounts payable	2,176	3,612
Accrued compensation	2,381	3,948
Other current liabilities	4,202	3,194
Deferred revenue	4,666	4,591
Total current liabilities	13,425	15,345
Long-term deferred revenue	26,816	30,203
Other long-term liabilities	3,072	787
Total liabilities	43,313	46,335
Contingencies (Note 12)
Stockholders’ equity:
Common stock and additional paid-in capital — $0.001 par value; 100,000,000 shares authorized; 38,618,922 and 37,652,498 shares issued, respectively; 31,795,775 and 30,829,351 shares outstanding, respectively	252,191	246,415
Accumulated other comprehensive income	132	116
Accumulated deficit	(119,544)	(98,521)
Treasury stock at cost: 6,823,147 and 6,823,147 shares, respectively	(48,350)	(48,350)
Total stockholders’ equity	84,429	99,660
Total liabilities and stockholders’ equity	$ 127,742	$ 145,995