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v3.20.4

Consolidated Statements of Cash Flows - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Operating Activities |  |  |
Net income | $ 79,009 | $ 53,711 | $ 42,329
Adjustments to reconcile net income to net cash provided by operating activities: |  |  |
Depreciation and amortization | 25,634 | 22,766 | 17,655
Amortization of bond premiums | 0 | 0 | 13
Amortization of debt issuance costs | 43 | 7 | 0
Provision for credit losses on accounts receivable, net of adjustments | 153 | 91 | 174
Provision for excess and obsolete inventories | 1,108 | 1,454 | 152
Share-based compensation | 11,342 | 11,799 | 7,862
(Gain) loss on disposition of assets | (6,478) | 337 | (12)
Foreign currency transaction (gain) loss | (12) | (27) | 55
Interest income on note receivable | (24) | (25) | (27)
Deferred income taxes | 13,027 | 6,038 | 2,641
Changes in assets and liabilities: |  |  |
Accounts receivable | 19,859 | (13,412) | (2,832)
Income tax receivable | (3,815) | 5,129 | (4,448)
Inventories | (9,726) | 2,557 | (5,598)
Prepaid expenses and other | (2,364) | (329) | (528)
Accounts payable | (2,155) | 280 | (1,176)
Deferred revenue | 1,010 | 425 | 412
Accrued liabilities and donations | 2,203 | 7,124 | (1,816)
Net cash provided by operating activities | 128,814 | 97,925 | 54,856
Investing Activities |  |  |
Capital expenditures | (67,802) | (37,166) | (37,268)
Cash paid in business combination | 0 | 0 | (6,377)
Proceeds from sale of property, plant and equipment | 60 | 69 | 13
Insurance proceeds | 6,417 | 0 | 0
Investment in certificates of deposits | 0 | (6,000) | (7,200)
Maturities of certificates of deposits | 0 | 6,000 | 10,080
Purchase of investments held to maturity | 0 | 0 | (9,001)
Maturities of investments held to maturity | 0 | 0 | 14,570
Proceeds from called investments | 0 | 0 | 495
Principal payments from note receivable | 52 | 51 | 53
Net cash used in investing activities | (61,273) | (37,046) | (34,635)
Financing Activities |  |  |
Proceeds from financing obligation, net of issuance costs | 0 | 6,614 | 0
Payment related to financing costs | 0 | (301) | 0
Stock options exercised | 21,418 | 12,625 | 4,987
Repurchase of stock | (30,060) | (19,586) | (26,846)
Employee taxes paid by withholding shares | (1,169) | (1,207) | (1,097)
Dividends paid to stockholders | (19,815) | (16,645) | (16,728)
Net cash used in financing activities | (29,626) | (18,500) | (39,684)
Net increase (decrease) in cash, cash equivalents and restricted cash | 37,915 | 42,379 | (19,463)
Cash, cash equivalents and restricted cash, beginning of year | 44,373 | 1,994 | 21,457
Cash, cash equivalents and restricted cash, end of year | $ 82,288 | $ 44,373 | $ 1,994

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