CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
CASH FLOWS FROM OPERATING ACTIVITIES:
Net earnings	$ 20,455	$ 18,571
Adjustments to reconcile net earnings to net cash used in operating activities:
Depreciation and amortization	9,334	9,154
Deferred income taxes	393	(472)
Amortization of marketable security premiums	694	888
Changes in operating assets and liabilities:
Accounts receivable	13,038	10,038
Other receivables	(242)	(1,308)
Inventories	(37,692)	(36,818)
Prepaid expenses and other assets	1,529	6,786
Accounts payable and accrued liabilities	(167)	8
Income taxes payable	2,750	(814)
Postretirement health care benefits	(602)	(586)
Deferred compensation and other liabilities	1,531	948
Net cash from operating activities	11,021	6,395
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital expenditures	(9,945)	(11,662)
Purchases of trading securities	(2,641)	(3,562)
Sales of trading securities	362	817
Purchase of available for sale securities	(33,558)	(49,742)
Sale and maturity of available for sale securities	12,120	27,057
Net cash used in investing activities	(33,662)	(37,092)
CASH FLOWS FROM FINANCING ACTIVITIES:
Shares purchased and retired	(19,186)	(15,803)
Dividends paid in cash	(11,699)	(11,435)
Proceeds from bank loans	1,911	1,264
Repayment of bank loans	(1,594)	(1,255)
Net cash used in financing activities	(30,568)	(27,229)
Effect of exchange rate changes on cash	164	(64)
Decrease in cash and cash equivalents	(53,045)	(57,990)
Cash, cash equivalents, and restricted cash at beginning of year	111,287	96,720
Cash, cash equivalents, and restricted cash at end of quarter	58,242	38,730
Supplemental cash flow information:
Income taxes paid/(received), net	4,226	6,661
Interest paid	65	54
Stock dividend issued	$ 70,557	$ 60,538