v2.4.0.6
Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $)
In Thousands, unless otherwise specified
 6 Months Ended
Oct. 31, 2012
Oct. 31, 2011
Operating activities    
Net loss $ (29,781) $ (11,387)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:    
Depreciation and amortization expense 4,335 1,410
Stock-based expense 15,933 3,255
Bad debt expense 783 847
Excess tax benefit related to stock-based compensation (272)  
Changes in operating assets and liabilities:    
Accounts receivable (4,800) (5,506)
Prepaid expenses and other current assets (228) (1,077)
Other non-current assets (116) (213)
Accounts payable 3,176 2,227
Accrued expenses and other current liabilities 2,534 4,188
Deferred revenue 1,334 7,207
Other liabilities, long-term 1,138 263
Net cash provided by (used in) operating activities (5,964) 1,214
Investing activities    
Acquisitions, net of cash acquired (30,314)  
Purchases of property, equipment and capitalized internal-use software development costs, net (5,830) (2,820)
Purchases of short-term investments (66,717)  
Proceeds from sale of short-term investments 21,165  
Increase in restricted cash   (250)
Net cash used in investing activities (81,696) (3,070)
Financing activities    
Payments of initial stock offering costs   (937)
Proceeds from follow-on stock offering, net of costs 51,943  
Proceeds from exercise of stock options 6,196 1,782
Excess tax benefit related to stock-based compensation 272  
Net cash provided by financing activities 58,411 845
Effect of exchange rate fluctuations on cash and cash equivalents (2) (39)
Net decrease in cash and cash equivalents (29,251) (1,050)
Cash and cash equivalents at beginning of period 74,367 15,050
Cash and cash equivalents at end of period 45,116 14,000
Supplemental disclosure of other cash flow information:    
Cash paid for income taxes 236 18
Supplemental disclosure of non-cash investing and financing activities:    
Accretion of redeemable convertible preferred stock   25
Accrued stock offering costs   934
Issuance of stock for acquisition $ 119,695