CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Jan. 31, 2013	Jan. 31, 2012
Current assets:
Cash and cash equivalents	$ 305,939	$ 31,599
Accounts receivable, net	63,948	34,495
Prepaid expenses and other current assets	6,861	4,261
Total current assets	376,748	70,355
Restricted cash		514
Property and equipment, net	13,205	8,919
Other assets	492	2,435
Total assets	390,445	82,223
Current liabilities:
Accounts payable	1,632	1,455
Accrued payroll and compensation	28,123	16,142
Accrued expenses and other liabilities	7,636	7,711
Deferred revenue, current portion	79,568	42,923
Term debt, current portion		982
Total current liabilities	116,959	69,213
Deferred revenue, non-current	35,144	9,742
Preferred stock warrant liability		2,133
Other liabilities, non-current	798	561
Term debt, non-current		1,307
Total non-current liabilities	35,942	13,743
Total liabilities	152,901	82,956
Commitments and contingencies (Note 4)
Convertible preferred stock
Convertible preferred stock, $0.001 par value; no shares authorized, issued or outstanding at January 31, 2013, and 57,904,560 shares authorized with 56,930,194 shares issued and outstanding at January 31, 2012		40,913
Stockholders' equity (deficit):
Preferred stock: $0.001 par value; 20,000,000 shares authorized; no shares issued or outstanding at January 31, 2013; and no shares authorized, issued or outstanding at January 31, 2012
Common stock: $0.001 par value; 1,000,000,000 shares authorized; 100,920,350 shares issued and outstanding at January 31, 2013, and 106,511,960 shares authorized with 23,092,407 shares issued and outstanding at January 31, 2012	101	23
Accumulated other comprehensive loss	(135)	(24)
Additional paid-in capital	328,277	12,373
Accumulated deficit	(90,699)	(54,018)
Total stockholders' equity (deficit)	237,544	(41,646)
Total liabilities, convertible preferred stock and stockholders' equity (deficit)	$ 390,445	$ 82,223