CONSOLIDATED STATEMENTS OF Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
CASH FLOWS FROM OPERATING ACTIVITIES:
Net earnings	$ 18,571	$ 21,861
Adjustments to reconcile net earnings to net cash used in operating activities:
Depreciation and amortization	9,154	9,338
Deferred income taxes	(472)	21
Amortization of marketable security premiums	888	1,216
Changes in operating assets and liabilities:
Accounts receivable	10,038	12,535
Other receivables	(1,308)	(4,522)
Inventories	(36,818)	(36,460)
Prepaid expenses and other assets	6,786	2,138
Accounts payable and accrued liabilities	8	1,820
Income taxes payable	(814)	79
Postretirement health care benefits	(586)	(423)
Deferred compensation and other liabilities	948	776
Net cash from operating activities	6,395	8,379
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital expenditures	(11,662)	(7,427)
Purchases of trading securities	(3,562)	(3,007)
Sales of trading securities	817	435
Purchase of available for sale securities	(49,742)	(40,622)
Sale and maturity of available for sale securities	27,057	10,985
Net cash used in investing activities	(37,092)	(39,636)
CASH FLOWS FROM FINANCING ACTIVITIES:
Shares purchased and retired	(15,803)	(20,140)
Dividends paid in cash	(11,435)	(11,282)
Proceeds from bank loans	1,264	724
Repayment of bank loans	(1,255)	(965)
Net cash used in financing activities	(27,229)	(31,663)
Effect of exchange rate changes on cash	(64)	1,612
Decrease in cash and cash equivalents	(57,990)	(61,308)
Cash, cash equivalents, and restricted cash at beginning of year	96,720	119,527
Cash, cash equivalents, and restricted cash at end of quarter	38,730	58,219
Supplemental cash flow information:
Income taxes paid/(received), net	6,661	8,798
Interest paid	54	31
Stock dividend issued	$ 60,538	$ 69,739