Condensed Consolidated Statements of Comprehensive Loss (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013		Mar. 31, 2012
Revenues:
Subscription	$ 71,558		$ 39,541
Professional services and other	14,381		7,890
Total revenues	85,939		47,431
Cost of revenues(1):
Subscription	18,312	[1]	11,012	[1]
Professional services and other	13,996	[1]	10,224	[1]
Total cost of revenues	32,308	[1]	21,236	[1]
Gross profit	53,631	[1]	26,195	[1]
Operating expenses(1):
Sales and marketing	38,226	[1]	19,307	[1]
Research and development	16,039	[1]	6,043	[1]
General and administrative	12,279	[1]	6,427	[1]
Total operating expenses	66,544	[1]	31,777	[1]
Loss from operations	(12,913)	[1]	(5,582)	[1]
Interest and other income, net	119		492
Loss before provision for income taxes	(12,794)		(5,090)
Provision for income taxes	564		550
Net loss	(13,358)		(5,640)
Net loss attributable to common stockholders - basic	(13,358)		(5,794)
Net loss attributable to common stockholders - diluted	(13,358)		(5,794)
Net loss per share attributable to common stockholders - basic (usd per share)	$ (0.10)		$ (0.23)
Net loss per share attributable to common stockholders - diluted (usd per share)	$ (0.10)		$ (0.23)
Weighted-average shares used to compute net loss per share attributable to common stockholders - basic and diluted	129,782,029		25,123,582
Other comprehensive loss:
Foreign currency translation adjustments	(1,166)		(68)
Unrealized gain on investments	13		0
(Provision for) benefit from income taxes	(33)		60
Other comprehensive loss, net of tax	(1,120)		(128)
Comprehensive loss	$ (14,478)		$ (5,768)

[1] Includes stock-based compensation as follows: Three Months Ended March 31, 2013 2012Cost of revenues: Subscription$1,794 $532Professional services and other821 192Sales and marketing3,985 1,471Research and development3,114 661General and administrative2,332 1,062