CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
CASH FLOWS FROM OPERATING ACTIVITIES:
Net earnings	$ 13,394	$ 12,019
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation	4,599	4,216
Deferred income taxes	10	208
Amortization of marketable security premiums	1,185	1,334
Changes in operating assets and liabilities:
Accounts receivable	(360)	3,092
Other receivables	645	(239)
Inventories	(24,432)	(12,051)
Prepaid expenses and other assets	1,033	1,829
Accounts payable and accrued liabilities	(4,845)	4,296
Income taxes payable	1,536	2,213
Postretirement health care benefits	(201)	(209)
Deferred compensation and other liabilities	(46)	99
Net cash (used in) provided by operating activities	(7,482)	16,807
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital expenditures	(5,049)	(5,948)
Purchases of trading securities	(1,010)	(737)
Sales of trading securities	528	205
Purchase of available for sale securities	(14,848)	(25,148)
Sale and maturity of available for sale securities	25,874	8,524
Net cash provided by (used in) investing activities	5,495	(23,104)
CASH FLOWS FROM FINANCING ACTIVITIES:
Shares purchased and retired	(1,604)	(1,152)
Dividends paid in cash	(12,291)	(12,075)
Proceeds from bank loans	1,110	1,178
Repayment of bank loans	(1,115)	(1,016)
Net cash used in financing activities	(13,900)	(13,065)
Effect of exchange rate changes on cash	613	313
Decrease in cash and cash equivalents	(15,274)	(19,049)
Cash, cash equivalents and restricted cash at beginning of year	53,635	106,226
Cash, cash equivalents and restricted cash at end of quarter	38,361	87,177
Supplemental cash flow information:
Income taxes paid/(received), net	2,303	1,571
Interest paid	58	2
Stock dividend issued	$ 86,433	$ 70,242