v3.8.0.1
Condensed Consolidated Statements of Cash Flows - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Cash flows from operating activities    
Net loss $ (14,871) $ (3,439)
Adjustments to reconcile net loss to net cash used in operating activities:    
Depreciation and amortization 7,375 3,648
Stock-based compensation expense 7,122 3,895
Changes in operating assets and liabilities:    
Increase in accounts receivable, net (26,109) (20,812)
Increase in prepaid expenses and other assets (4,306) (545)
Increase in accounts payable and accrued expenses 6,010 8,911
Decrease in accrued compensation and related benefits (5,437) (7,668)
Increase in deferred revenue 14,484 8,582
Increase in payments to university clients (3,826) (4,514)
Increase in other liabilities, net 331 343
Other 395  
Net cash used in operating activities (18,832) (11,599)
Cash flows from investing activities    
Additions of amortizable intangible assets (21,805) (4,909)
Purchases of property and equipment (1,856) (9,384)
Net cash used in investing activities (23,661) (14,293)
Cash flows from financing activities    
Proceeds from exercise of stock options 2,120 518
Tax withholding payments associated with settlement of restricted stock units (1,002) (467)
Net cash provided by financing activities 1,118 51
Effect of exchange rate changes on cash 115  
Net (decrease) in cash and cash equivalents (41,260) (25,841)
Cash and cash equivalents, beginning of period 223,370 168,730
Cash and cash equivalents, end of period $ 182,110 $ 142,889