Equity (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2024	Mar. 31, 2023
Beginning Balance	$ 1,328,104	$ 1,289,201	$ 1,314,168	$ 1,291,247
Net income	20,710	33,066	75,407	85,626
Other comprehensive income (loss)	(17,746)	13,280	(4,698)	14,356
Dividend reinvestment	44	47	135	140
Capital stock issued under employee benefit and stock plans	5,869	4,528	12,567	12,594
Purchase of capital stock	(15,030)	(7,488)	(43,786)	(37,556)
Cash dividends	(15,853)	(16,097)	(47,697)	(48,468)
Ending Balance	1,305,894	1,316,316	1,305,894	1,316,316
Capital stock [Member]
Beginning Balance	99,071	100,641	99,794	101,671
Dividend reinvestment	2	2	7	6
Capital stock issued under employee benefit and stock plans	18	29	708	614
Purchase of capital stock	(762)	(330)	(2,180)	(1,949)
Ending Balance	98,329	100,342	98,329	100,342
Additional paid-in capital [Member]
Beginning Balance	444,162	473,323	465,406	494,202
Dividend reinvestment	42	45	128	134
Capital stock issued under employee benefit and stock plans	5,851	4,499	11,859	11,980
Purchase of capital stock	(14,268)	(7,158)	(41,606)	(35,607)
Ending Balance	435,787	470,709	435,787	470,709
Retained earnings [Member]
Beginning Balance	1,145,911	1,088,379	1,124,590	1,070,655
Net income	18,976	31,937	72,141	82,032
Cash dividends	(15,853)	(16,097)	(47,697)	(48,468)
Ending Balance	1,149,034	1,104,219	1,149,034	1,104,219
Accumulated other comprehensive loss [Member]
Beginning Balance	(401,321)	(412,176)	(414,343)	(413,951)
Other comprehensive income (loss)	(17,270)	12,925	(4,248)	14,700
Ending Balance	(418,591)	(399,251)	(418,591)	(399,251)
Non-controlling interest [Member]
Beginning Balance	40,281	39,034	38,721	38,670
Net income	1,734	1,129	3,266	3,594
Other comprehensive income (loss)	(476)	355	(450)	(344)
Cash dividends	(204)	(221)	(202)	(1,623)
Ending Balance	$ 41,335	$ 40,297	$ 41,335	$ 40,297