v2.4.0.8
Condensed Consolidated Statements of Cash Flows (USD $)
In Thousands, unless otherwise specified
 9 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Cash flows from operating activities    
Net loss $ (24,982) $ (22,774)
Adjustments to reconcile net loss to net cash used in operating activities:    
Depreciation and amortization 4,240 3,082
Stock-based compensation expense 5,486 1,707
Change in the fair value of the Series D redeemable convertible preferred stock warrant prior to conversion 695 (18)
Changes in operating assets and liabilities:    
Accounts receivable, net (8,203) (16,957)
Advances to clients (832) 166
Prepaid expenses (1,483) (290)
Other assets 1,119 (73)
Accounts payable (240) 244
Accrued expenses and other current liabilities 3,624 5,096
Deferred revenue 834 12,789
Refunds payable 567 243
Rebate reserve (930) (294)
Other liabilities (18) 38
Net cash used in operating activities (20,123) (17,041)
Cash flows from investing activities    
Expenditures for property and equipment (2,535) (2,116)
Capitalized content development cost expenditures (5,299) (3,561)
Other investing activities (21)  
Net cash used in investing activities (7,855) (5,677)
Cash flows from financing activities    
Proceeds from issuance of common stock, net of offering costs 100,302  
Proceeds from exercise of stock options 1,222 112
Repurchase of common shares   (178)
Proceeds from issuance of Series D redeemable convertible preferred stock, net of issuance costs   4,994
Net cash provided by financing activities 101,524 4,928
Net (decrease) increase in cash and cash equivalents 73,546 (17,790)
Cash and cash equivalents, beginning of period 7,012 25,190
Cash and cash equivalents, end of period 80,558 7,400
Supplemental disclosure of non-cash investing and financing activities    
Accretion of issuance costs on redeemable convertible preferred stock 89 261
Accrued capital expenditures 114 107
Deferred offering costs included in accounts payable and accrued expenses 59 568
Common stock granted in exchange for consulting services received $ 55