Quarterly report pursuant to Section 13 or 15(d)

Condensed Consolidated Statements of Cash Flows

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Condensed Consolidated Statements of Cash Flows (USD $)
In Thousands, unless otherwise specified
 9 Months Ended
Oct. 31, 2012
Oct. 31, 2011
Operating Activities    
Net loss $ (23,591) $ (7,928)
Adjustments to reconcile net loss to net cash provided (used in) by operating activities:    
Depreciation and amortization 5,147 2,987
Loss on disposition of assets 23 283
Stock-based compensation 18,610 5,739
Remeasurement of preferred stock warrants   4,499
Amortization of premium on investments 279  
Amortization of debt issuance cost and debt discount 198 124
Changes in assets and liabilities:    
Accounts receivable (31,126) (18,035)
Prepaid expenses and other assets (2,036) 711
Accounts payable and accrued liabilities 4,532 259
Accrued royalties 10,608 7,542
Accrued compensation (243) 4,404
Deferred revenue 7,744 2,522
Reimbursement of cost of leasehold improvements 1,243 375
Net cash provided (used in) by operating activities (8,612) 3,482
Investing Activities    
Purchases of property and equipment (5,981) (9,024)
Purchase of short-term investments (50,124) (36,934)
Maturities of short-term investments 73,460  
Net cash provided by (used) in investing activities 17,355 (45,958)
Financing Activities    
Repayments of debt   (7,596)
Proceeds from exercise of preferred stock warrants   165
Proceeds from initial public offering net of offering costs   90,912
Proceeds from issuance of common stock 5,065 828
Tax withholdings related to net share settlements of restricted stock units (208)  
Payment of dividends to preferred stockholders at initial public offering   (31,005)
Net cash provided by financing activities 4,857 53,304
Effects of foreign currency translation on cash and cash equivalents (1)  
Net increase in cash and cash equivalents 13,599 10,828
Cash and cash equivalents at beginning of period 44,126 43,048
Cash and cash equivalents at end of period $ 57,725 $ 53,876