Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Assets
Cash and cash equivalents	$ 109,583	$ 76,442
Short-term investments	199,925	0
Accounts receivable, net	67,191	47,528
Deferred commissions	16,634	9,354
Prepaid expenses and other current assets	14,118	8,249
Total current assets	407,451	141,573
Capitalized software development costs, net	10,665	7,007
Property and equipment, net	14,436	7,947
Intangible assets, net	4,632	6,887
Goodwill	8,193	8,193
Other assets, net	5,978	227
Total Assets	451,355	171,834
Liabilities:
Accounts payable	10,037	4,849
Accrued expenses	22,288	14,986
Deferred revenue, current portion	135,322	87,759
Capital lease obligations, current portion	905	1,643
Debt, current portion	519	916
Other liabilities	4,203	3,885
Total current liabilities	173,274	114,038
Convertible notes, net	217,965	0
Other liabilities, non-current	3,111	3,592
Deferred revenue, net of current portion	3,500	4,493
Capital lease obligations, net of current portion	218	1,227
Debt, net of current portion	392	1,836
Total liabilities	398,460	125,186
Commitments and contingencies (Note 16)
Stockholders’ Equity:
Common stock, $0.0001 par value; 1,000,000 shares authorized, 52,470 and 50,690 shares issued and outstanding at December 31, 2013 and 2012	5	5
Additional paid-in capital	289,307	242,767
Accumulated deficit	(236,467)	(196,041)
Accumulated other comprehensive income (loss)	50	(83)
Total stockholders’ equity	52,895	46,648
Total Liabilities and Stockholders’ Equity	$ 451,355	$ 171,834