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CONSOLIDATED STATEMENTS OF Cash Flows - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
CASH FLOWS FROM OPERATING ACTIVITIES: |  |  |
Net earnings | $ 80,654 | $ 67,319 | $ 66,127
Adjustments to reconcile net earnings to net cash used in operating activities: |  |  |
Depreciation and amortization | 18,991 | 19,627 | 20,388
Deferred income taxes | (2,337) | 199 | 255
Impairment of majority-owned Spanish subsidiaries | 2,371 |  |
Amortization of marketable security premiums | 2,386 | 2,830 | 3,105
Changes in operating assets and liabilities: |  |  |
Accounts receivable | (4,012) | 6,869 | (8,929)
Other receivables | (3,146) | 473 | 1,119
Inventories | 1,558 | 4,183 | 7,530
Prepaid expenses and other assets | (22,052) | 2,999 | 11,593
Accounts payable and accrued liabilities | (557) | (2,061) | 3,839
Income taxes payable | (11,899) | (5,797) | (115)
Postretirement health care benefits | (1,192) | (1,216) | (903)
Deferred compensation and other liabilities | (17,792) | 3,125 | (12,936)
Net cash from operating activities | 42,973 | 98,550 | 91,073
CASH FLOWS FROM INVESTING ACTIVITIES: |  |  |
Change in restricted cash | (23) |  | 1,149
Capital expenditures | (16,673) | (16,090) | (15,534)
Purchases of trading securities | (5,089) | (4,569) | (4,095)
Sales of trading securities | 22,396 | 1,433 | 16,644
Purchase of available for sale securities | (89,364) | (81,835) | (61,951)
Sale and maturity of available for sale securities | 79,410 | 49,177 | 55,264
Net cash used in investing activities | (9,343) | (51,884) | (8,523)
CASH FLOWS FROM FINANCING ACTIVITIES: |  |  |
Shares purchased and retired | (34,133) | (29,093) | (33,004)
Dividends paid in cash | (22,621) | (22,266) | (20,775)
Proceeds from bank loans | 2,162 | 2,760 |
Repayment of bank loans | (2,289) | (2,788) | (133)
Net cash used in financing activities | (56,881) | (51,387) | (53,912)
Effect of exchange rate changes on cash | 420 | (2,279) | (2,601)
Increase (decrease) in cash and cash equivalents | (22,831) | (7,000) | 26,037
Cash and cash equivalents at beginning of year | 119,145 | 126,145 | 100,108
Cash and cash equivalents at end of year | 96,314 | 119,145 | 126,145
Supplemental cash flow information: |  |  |
Income taxes paid | 18,854 | 36,365 | 24,940
Interest paid | 68 | 34 | 17
Stock dividend issued | $ 69,739 | $ 61,671 | $ 57,220

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