v3.10.0.1
Condensed Consolidated Statements of Cash Flows - USD ($)
$ in Thousands
 9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Cash flows from operating activities    
Net loss $ (43,162) $ (29,932)
Adjustments to reconcile net loss to net cash used in operating activities:    
Depreciation and amortization 23,382 13,318
Stock-based compensation expense 24,064 15,537
Changes in operating assets and liabilities:    
Increase in accounts receivable, net (35,543) (33,915)
Increase in prepaid expenses and other assets (5,426) (1,638)
Increase in accounts payable and accrued expenses 10,796 6,101
Increase (decrease) in accrued compensation and related benefits 1,185 (1,447)
Increase in deferred revenue 12,210 11,723
Increase in payments to university clients (11,066) (12,146)
(Decrease) increase in other liabilities, net (3,976) 5,349
Other 1,493 971
Net cash used in operating activities (26,043) (26,079)
Cash flows from investing activities    
Purchase of a business, net of cash acquired 0 (97,102)
Additions of amortizable intangible assets (51,713) (16,383)
Purchases of property and equipment (8,027) (20,924)
Purchase of investments (25,000) 0
Advances made to university clients 25 0
Advances made to university clients (300) 0
Net cash used in investing activities (85,015) (134,409)
Cash flows from financing activities    
Proceeds from issuance of common stock, net of offering costs 330,862 189,917
Proceeds from exercise of stock options 7,032 4,118
Tax withholding payments associated with settlement of restricted stock units (3,450) (1,310)
Proceeds from ESPP share purchases 1,278 0
Proceeds from debt 0 3,500
Payments on debt 0 (984)
Payments for acquisition of amortizable intangible assets (4,900) 0
Net cash provided by financing activities 330,822 195,241
Effect of exchange rate changes on cash (908) (1,049)
Net increase in cash and cash equivalents 218,856 33,704
Cash and cash equivalents, beginning of period 223,370 168,730
Cash and cash equivalents, end of period $ 442,226 $ 202,434