Condensed Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Current assets
Cash and cash equivalents	$ 75,757	$ 104,407	[1]
Accounts receivable, net	20,075	14,921	[1]
Prepaid expenses and other current assets	4,075	2,695	[1]
Total current assets	99,907	122,023	[1]
Property and equipment, net	13,817	14,417	[1]
Intangible assets, net	7,884
Goodwill	11,681
Other noncurrent assets	1,013	937	[1]
Total assets	134,302	137,377	[1]
Current liabilities
Accounts payable	1,801	1,018	[1]
Accrued expenses and other current liabilities	13,135	10,950	[1]
Deferred revenues	3,171	2,566	[1]
Current portion of long-term debt	2,787	3,253	[1]
Total current liabilities	20,894	17,787	[1]
Long-term debt, less current portion	1,151	2,962	[1]
Other long-term liabilities	1,127	1,284	[1]
Total liabilities	23,172	22,033	[1]
Stockholders' equity
Common stock, $0.001 par value - 500,000 shares authorized, 35,632 and 33,133 shares issued, 34,925 and 32,953 outstanding at September 30, 2014, and December 31, 2013, respectively	35	33	[1]
Additional paid-in capital	249,010	228,512	[1]
Accumulated deficit	(137,542)	(113,201)	[1]
Accumulated other comprehensive loss	(373)	0	[1]
Total stockholders' equity	111,130	115,344	[1]
Total liabilities and stockholders' equity	$ 134,302	$ 137,377	[1]

[1] Derived from our audited consolidated financial statements as of December 31, 2013.