Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Jan. 31, 2014	Jan. 31, 2013
Current assets:
Cash and cash equivalents	$ 262,507	$ 31,890
Short-term investments	25,625	14,276
Accounts receivable, net of allowance for doubtful accounts of $305 and $305, respectively	58,433	37,094
Deferred income taxes	2,075	1,169
Income tax receivable	1,389	1,111
Note receivable-related party		253
Other current assets	3,703	1,097
Total current assets	353,732	86,890
Property and equipment, net	2,445	1,379
Capitalized internal-use software, net	1,585	880
Goodwill	4,850
Intangible assets, net	6,551
Other long-term assets	1,145	671
Total assets	370,308	89,820
Current liabilities:
Accounts payable	2,117	3,340
Accrued expenses	16,681	6,981
Income tax payable	439	5,183
Deferred revenue	67,380	38,785
Total current liabilities	86,617	54,289
Deferred income taxes, noncurrent	1,698	441
Other long-term liabilities	1,897	1,124
Total liabilities	90,212	55,854
Commitments and contingencies (Note 12)
Stockholders' equity:
Preferred stock
Common stock
Additional paid-in capital	231,534	2,101
Accumulated other comprehensive income	19	5
Retained earnings	48,542	24,927
Total stockholders' equity	280,096	33,966
Total liabilities and stockholders' equity	370,308	89,820
Series A convertible preferred stock [Member]
Stockholders' equity:
Preferred stock		2,996
Series B convertible preferred stock [Member]
Stockholders' equity:
Preferred stock		3,937
Class A common stock [Member]
Stockholders' equity:
Common stock
Class B common stock [Member]
Stockholders' equity:
Common stock	$ 1