CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
CASH FLOWS FROM OPERATING ACTIVITIES:
Net earnings	$ 24,000	$ 20,555
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation	8,451	8,757
Deferred income taxes	(233)	378
Amortization of marketable security premiums	2,792	1,644
Changes in operating assets and liabilities:
Accounts receivable	10,165	5,040
Other receivables	(745)	64
Inventories	(45,483)	(28,665)
Prepaid expenses and other assets	2,206	(1,260)
Accounts payable and accrued liabilities	3,214	7,388
Income taxes payable	(3,813)	(3,068)
Postretirement health care benefits	(431)	(690)
Deferred compensation and other liabilities	494	635
Net cash provided by operating activities	617	10,778
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital expenditures	(10,194)	(12,327)
Purchases of trading securities	(1,112)	(1,959)
Sales of trading securities	205	582
Purchase of available for sale securities	(57,731)	(58,154)
Sale and maturity of available for sale securities	25,993	19,798
Net cash from (used in) investing activities	(42,839)	(52,060)
CASH FLOWS FROM FINANCING ACTIVITIES:
Shares purchased and retired	(5,023)	(17,181)
Dividends paid in cash	(12,237)	(12,034)
Proceeds from bank loans	2,182	2,032
Repayment of bank loans	(2,018)	(1,847)
Net cash used in financing activities	(17,096)	(29,030)
Effect of exchange rate changes on cash	75	75
Increase (Decrease) in cash and cash equivalents	(59,243)	(70,237)
Cash, cash equivalents and restricted cash at beginning of year	106,226	167,256
Cash, cash equivalents and restricted cash at end of quarter	46,983	97,019
Supplemental cash flow information:
Income taxes paid/(received), net	11,415	13,120
Interest paid	13	4
Stock dividend issued	$ 70,242	$ 64,667