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v3.19.2

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands | 6 Months Ended
--- | ---
Jun. 30, 2019 | Jun. 30, 2018
Operating activities: |  |
Net income | $ 12,488 | $ 6,501
Adjustments to reconcile net income to net cash provided by operating activities: |  |
Depreciation and amortization | 7,687 | 3,870
Write-offs and sales allowances | 796 | 948
Net realized loss on short-term investments | 41 | 0
Deferred taxes | (3,219) | (5,758)
Share-based compensation expense | 6,053 | 8,121
Changes in operating assets and liabilities: |  |
Accounts receivable | 5,985 | 5,044
Prepaid expenses and other current assets | 7,089 | 453
Deposits and other assets | 96 | (344)
Accounts payable and accrued expenses | (8,396) | (7,775)
Accrued compensation and employee benefits | (8,082) | (3,015)
Deferred revenue and advance payments | 33,489 | 10,502
Operating lease liabilities | (4,316) | 0
Other long-term liabilities | (509) | 4,780
Net cash provided by operating activities | 49,202 | 23,327
Investing activities: |  |
Proceeds from redemption of short-term investments | 369,603 | 245,680
Purchases of property and equipment | (8,432) | (2,644)
Purchases of short-term investments | (212,248) | (596,376)
Net cash provided by (used in) investing activities | 148,923 | (353,340)
Financing activities: |  |
Proceeds from sale of class A common stock under exercise of employee stock options | 1,836 | 2,471
Purchases of treasury stock | (48,244) | 0
Payments on capital lease obligations and other financing arrangements prior to the adoption of ASU 2016-02 | 0 | (9)
Net cash (used in) provided by financing activities | (46,408) | 2,462
Effect of foreign exchange rate changes on cash, cash equivalents, and restricted cash | 33 | (2,240)
Net increase (decrease) in cash, cash equivalents, and restricted cash | 151,750 | (329,791)
Cash, cash equivalents and restricted cash, beginning of period | 110,786 | 421,182
Cash, cash equivalents and restricted cash, end of period | $ 262,536 | $ 91,391

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