CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
CASH FLOWS FROM OPERATING ACTIVITIES:
Net earnings	$ 19,358	$ 20,455
Adjustments to reconcile net earnings to net cash used in operating activities:
Depreciation	9,219	9,334
Deferred income taxes	(568)	393
Amortization of marketable security premiums	557	694
Changes in operating assets and liabilities:
Accounts receivable	14,333	13,038
Other receivables	(1,208)	(242)
Inventories	(36,863)	(37,692)
Prepaid expenses and other assets	1,183	1,529
Accounts payable and accrued liabilities	40	(167)
Income taxes payable	5,033	2,750
Postretirement health care benefits	(573)	(602)
Deferred compensation and other liabilities	369	1,531
Net cash provided by operating activities	10,880	11,021
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital expenditures	(6,410)	(9,945)
Purchases of trading securities	(2,438)	(2,641)
Sales of trading securities	380	362
Purchase of available for sale securities	(53,269)	(33,558)
Sale and maturity of available for sale securities	44,466	12,120
Net cash from (used in) investing activities	(17,271)	(33,662)
CASH FLOWS FROM FINANCING ACTIVITIES:
Shares purchased and retired	(12,959)	(19,186)
Dividends paid in cash	(11,853)	(11,699)
Proceeds from bank loans	2,133	1,911
Repayment of bank loans	(2,019)	(1,594)
Net cash used in financing activities	(24,698)	(30,568)
Effect of exchange rate changes on cash	(1,582)	164
Increase (Decrease) in cash and cash equivalents	(32,671)	(53,045)
Cash, cash equivalents and restricted cash at beginning of year	139,340	111,287
Cash, cash equivalents and restricted cash at end of quarter	106,669	58,242
Supplemental cash flow information:
Income taxes paid/(received), net	1,035	4,226
Interest paid	49	65
Stock dividend issued	$ 63,402	$ 70,557