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CONSOLIDATED STATEMENTS OF Cash Flows - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
CASH FLOWS FROM OPERATING ACTIVITIES: |  |  |
Net earnings | $ 67,319 | $ 66,127 | $ 62,860
Adjustments to reconcile net earnings to net cash provided by operating activities: |  |  |
Depreciation | 19,627 | 20,388 | 20,758
Deferred income taxes | 199 | 255 | (946)
Net loss on step acquisition |  |  | 529
Amortization of marketable security premiums | 2,830 | 3,105 | 3,261
Changes in operating assets and liabilities: |  |  |
Accounts receivable | 6,869 | (8,929) | (2,007)
Other receivables | 473 | 1,119 | 1,289
Inventories | 4,183 | 7,530 | (7,329)
Prepaid expenses and other assets | 2,999 | 11,593 | 9,524
Accounts payable and accrued liabilities | (2,061) | 3,839 | (1,268)
Income taxes payable | (5,797) | (115) | (78)
Postretirement health care benefits | (1,216) | (903) | (1,289)
Deferred compensation and other liabilities | 3,125 | (12,936) | 3,465
Net cash provided by operating activities | 98,550 | 91,073 | 88,769
CASH FLOWS FROM INVESTING ACTIVITIES: |  |  |
Net cash acquired in step acquisition |  |  | 161
Change in restricted cash |  | 1,149 | 224
Capital expenditures | (16,090) | (15,534) | (10,704)
Purchases of trading securities | (4,569) | (4,095) | (4,294)
Sales of trading securities | 1,433 | 16,644 | 727
Purchase of available for sale securities | (81,835) | (61,951) | (54,882)
Sale and maturity of available for sale securities | 49,177 | 55,264 | 38,309
Net cash used in investing activities | (51,884) | (8,523) | (30,459)
CASH FLOWS FROM FINANCING ACTIVITIES: |  |  |
Shares purchased and retired | (29,093) | (33,004) | (25,020)
Dividends paid in cash | (22,266) | (20,775) | (19,241)
Proceeds from bank loans | 2,760 |  |
Repayment of bank loans | (2,788) | (133) | (403)
Net cash used in financing activities | (51,387) | (53,912) | (44,664)
Effect of exchange rate changes on cash | (2,279) | (2,601) | (1,821)
Increase (decrease) in cash and cash equivalents | (7,000) | 26,037 | 11,825
Cash and cash equivalents at beginning of year | 126,145 | 100,108 | 88,283
Cash and cash equivalents at end of year | 119,145 | 126,145 | 100,108
Supplemental cash flow information: |  |  |
Income taxes paid | 36,365 | 24,940 | 26,599
Interest paid | 34 | 17 | 34
Stock dividend issued | $ 61,671 | $ 57,220 | $ 52,165

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