Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Current assets:
Cash and cash equivalents	$ 52,636	$ 14,380
Short-term investments	18,998	42,981
Accounts and other receivables (net of allowances for doubtful accounts of $25 and $28)	1,100	3,021
Deferred income taxes	12,809	9,377
Prepaid expenses and other current assets	2,134	845
Total current assets	87,677	70,604
Property and equipment, net	4,929	1,207
Deferred income tax assets	17,221	25,419
Intangibles and other assets, net	3,997	291
Total assets	113,824	97,521
Current liabilities:
Accounts payable	1,243	669
Accrued compensation	3,183	1,906
Other current liabilities	3,216	2,225
Deferred revenue	17,767	7,779
Total current liabilities	25,409	12,579
Long-term deferred revenue	5,734	7,827
Other long-term liabilities	704	512
Total liabilities	$ 31,847	$ 20,918
Contingencies
Stockholders’ equity:
Common stock and additional paid-in capital — $0.001 par value; 100,000,000 shares authorized; 34,653,559 and 34,225,778 shares issued, respectively; 28,143,168 and 27,715,387 shares outstanding, respectively	$ 208,710	$ 204,876
Accumulated other comprehensive income	106	102
Accumulated deficit	(81,270)	(82,806)
Treasury stock at cost: 6,510,391 shares	(45,569)	(45,569)
Total stockholders’ equity	81,977	76,603
Total liabilities and stockholders’ equity	$ 113,824	$ 97,521