v2.4.0.8
Condensed Consolidated Statements of Cash Flows (USD $)
In Thousands, unless otherwise specified
 3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Cash flows from operating activities    
Net loss $ (7,050) $ (3,746)
Adjustments to reconcile net loss to net cash provided by operating activities:    
Depreciation and amortization 1,283 926
Stock-based compensation expense 1,195 436
Change in the fair value of the Series D redeemable convertible preferred stock warrant 688 (8)
Loss on asset disposal 2  
Changes in operating assets and liabilities:    
Accounts receivable, net 1,203 (404)
Advances to clients 257  
Prepaid expenses (1,108) (1,487)
Other assets (23) (361)
Accounts payable 4,244 434
Accrued expenses and other current liabilities (3,020) 1,714
Deferred revenue 4,511 3,378
Refunds payable 209 (18)
Rebate reserve 3 20
Other liabilities 80 15
Net cash provided by operating activities 2,474 899
Cash flows from investing activities    
Expenditures for property, equipment, and internally developed software (1,116) (790)
Capitalized content cost expenditures (1,505) (771)
Other investing activities (17)  
Net cash used in investing activities (2,638) (1,561)
Cash flows from financing activities    
Payment of deferred offering costs (1,411)  
Proceeds from exercise of stock options 262  
Proceeds from issuance of Series D redeemable convertible preferred stock, net of issuance costs   4,994
Net cash provided by (used in) financing activities (1,149) 4,994
Net increase (decrease) in cash and cash equivalents (1,313) 4,332
Cash and cash equivalents, beginning of period 7,012 25,190
Cash and cash equivalents, end of period 5,699 29,522
Supplemental disclosure of noncash investing and financing activities    
Accretion of issuance costs on redeemable convertible preferred stock 87 87
Accrued capital expenditures 73 236
Deferred offering costs included in accounts payable and accrued expenses 1,504  
Common stock granted in exchange for consulting services received $ 55