Condensed Consolidated Balance Sheets (Unaudited) - USD ($)	Sep. 30, 2015	Dec. 31, 2014
Current assets:
Cash and cash equivalents	$ 73,095,000	$ 73,520,000
Accounts receivable, net of allowance for doubtful accounts of $23 and $13 as of September 30, 2015 and December 31, 2014, respectively	16,921,000	12,229,000
Accounts receivable—related parties	1,496,000	3,066,000
Prepaid expenses and other current assets	6,877,000	4,425,000
Total current assets	98,389,000	93,240,000
Property and equipment, net	10,780,000	9,481,000
Restricted cash	146,000	146,000
Goodwill	3,068,000	3,068,000
Other assets	1,869,000	1,609,000
Total assets	114,252,000	107,544,000
Current liabilities:
Accounts payable	4,667,000	3,278,000
Accrued liabilities	4,103,000	2,628,000
Accrued compensation	8,165,000	8,927,000
Deferred revenue, current portion	8,052,000	6,959,000
Capital lease obligations, current portion	870,000	1,153,000
Total current liabilities	25,857,000	22,945,000
Deferred revenue, net of current portion	127,000	293,000
Capital lease obligations, net of current portion	666,000	1,243,000
Other long-term liabilities	4,114,000	2,986,000
Total liabilities	30,764,000	27,467,000
Stockholders’ equity:
Common stock, $0.001 par value—150,000 shares authorized as of September 30, 2015 and December 31, 2014; 30,750 and 29,264 shares issued and outstanding as of September 30, 2015 and December 31, 2014, respectively	31,000	29,000
Preferred stock, $0.001 par value—5,000 shares authorized as of September 30, 2015 and December 31, 2014; none issued and outstanding as of September 30, 2015 and December 31, 2014, respectively	0	0
Additional paid-in capital	451,925,000	439,275,000
Accumulated other comprehensive loss	(2,418,000)	(1,979,000)
Accumulated deficit	(366,050,000)	(357,248,000)
Total stockholders’ equity	83,488,000	80,077,000
Total liabilities and stockholders’ equity	$ 114,252,000	$ 107,544,000