Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Assets
Cash and cash equivalents	$ 83,300	$ 107,691
Short-term investments	218,791	136,841
Accounts receivable, net	136,657	104,686
Deferred commissions	36,298	35,910
Prepaid expenses and other current assets	18,467	15,297
Total current assets	493,513	400,425
Capitalized software development costs, net	30,683	23,089
Property and equipment, net	23,962	27,021
Long-term investments	41,046	64,247
Intangible assets, net	7,421	16,713
Goodwill	25,894	25,894
Other assets, net	1,110	878
Total Assets	623,629	558,267
Liabilities:
Accounts payable	24,392	18,954
Accrued expenses	47,619	44,111
Deferred revenue, current portion	272,206	237,679
Capital lease obligations, current portion	0	33
Other liabilities	2,094	2,663
Total current liabilities	346,311	303,440
Convertible notes, net	238,435	229,305
Other liabilities, non-current	1,794	3,240
Deferred revenue, net of current portion	10,126	14,460
Total liabilities	596,666	550,445
Commitments and contingencies (Note 15)
Stockholders’ Equity:
Common stock, $0.0001 par value; 1,000,000 shares authorized, 56,516 and 54,704 shares issued and outstanding at December 31, 2016 and 2015, respectively	6	5
Additional paid-in capital	476,230	394,089
Accumulated deficit	(453,719)	(386,882)
Accumulated other comprehensive income	4,446	610
Total stockholders’ equity	26,963	7,822
Total Liabilities and Stockholders’ Equity	$ 623,629	$ 558,267