Equity (Details) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Sep. 30, 2019	Dec. 31, 2021	Dec. 31, 2020
Beginning Balance	$ 1,364,647	$ 1,266,382		$ 1,368,205	$ 1,268,788
Net income (loss)	32,725	20,250	$ (610)	70,477	(610)
Other comprehensive income (loss)	(7,196)	44,774		(19,745)	77,646
Dividend reinvestment	47	50		95	101
Capital stock issued under employee benefit and stock plans	5,669	7,957		6,509	10,166
Purchase of capital stock	(22,599)	(50)		(35,508)	(101)
Cash dividends	(16,720)	(16,683)		(33,460)	(33,310)
Other	0	(1,630)		0	(1,630)
Ending Balance	1,356,573	1,319,689		1,356,573	1,319,689
Capital stock [Member]
Beginning Balance	104,527	104,064		104,518	103,654
Dividend reinvestment	1	2		3	4
Capital stock issued under employee benefit and stock plans	65	266		512	676
Purchase of capital stock	(751)	(2)		(1,191)	(4)
Ending Balance	103,842	104,330		103,842	104,330
Additional paid-in capital [Member]
Beginning Balance	550,790	540,374		562,820	538,575
Dividend reinvestment	46	48		92	97
Capital stock issued under employee benefit and stock plans	5,604	7,691		5,997	9,490
Purchase of capital stock	(21,848)	(48)		(34,317)	(97)
Other	0	(311)			(311)
Ending Balance	534,592	547,754		534,592	547,754
Retained earnings [Member]
Beginning Balance	1,012,055	966,596		992,597	1,004,898
Net income (loss)	31,421	19,388		67,619	(2,287)
Cash dividends	(16,720)	(16,683)		(33,460)	(33,310)
Ending Balance	1,026,756	969,301		1,026,756	969,301
Accumulated other comprehensive loss [Member]
Beginning Balance	(342,421)	(385,648)		(330,327)	(417,242)
Other comprehensive income (loss)	(6,747)	43,417		(18,841)	75,011
Ending Balance	(349,168)	(342,231)		(349,168)	(342,231)
Non-controlling interest [Member]
Beginning Balance	39,696	40,996		38,597	38,903
Net income (loss)	1,304	862		2,858	1,677
Other comprehensive income (loss)	(449)	1,357		(904)	2,635
Cash dividends	0	(1,361)		0	(1,361)
Other	0	(1,319)		0	(1,319)
Ending Balance	$ 40,551	$ 40,535		$ 40,551	$ 40,535