Equity details textual (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023	Jun. 30, 2023	Dec. 31, 2022	Jun. 30, 2022
Equity [Abstract]
Dividends per share	$ 0.20	$ 0.20	$ 0.6	$ 0.6
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	$ 1,305,894	$ 1,316,316	$ 1,305,894	$ 1,316,316	$ 1,328,104	$ 1,314,168	$ 1,289,201	$ 1,291,247
Net income	20,710	33,066	75,407	85,626
Other comprehensive income (loss), net of tax	(17,746)	13,280	(4,698)	14,356
Stock Issued During Period, Value, Dividend Reinvestment Plan	44	47	135	140
Stock Issued During Period, Value, Employee Benefit Plan	5,869	4,528	12,567	12,594
Stock Repurchased During Period, Value	(15,030)	(7,488)	(43,786)	(37,556)
Dividends, Common Stock, Cash	(15,853)	(16,097)	(47,697)	(48,468)
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	1,305,894	1,316,316	1,305,894	1,316,316	1,328,104	1,314,168	1,289,201	1,291,247
Net income	20,710	33,066	75,407	85,626
Other comprehensive income (loss), net of tax	(17,746)	13,280	(4,698)	14,356
Stock Issued During Period, Value, Dividend Reinvestment Plan	44	47	135	140
Stock Issued During Period, Value, Employee Benefit Plan	5,869	4,528	12,567	12,594
Stock Repurchased During Period, Value	15,030	7,488	43,786	37,556
Dividends, Common Stock, Cash	$ 15,853	$ 16,097	$ 47,697	$ 48,468
Dividends per share	$ 0.20	$ 0.20	$ 0.6	$ 0.6
Common Stock [Member]
Equity [Abstract]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	$ 98,329	$ 100,342	$ 98,329	$ 100,342	99,071	99,794	100,641	101,671
Stock Issued During Period, Value, Dividend Reinvestment Plan	2	2	7	6
Stock Issued During Period, Value, Employee Benefit Plan	18	29	708	614
Stock Repurchased During Period, Value	(762)	(330)	(2,180)	(1,949)
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	98,329	100,342	98,329	100,342	99,071	99,794	100,641	101,671
Stock Issued During Period, Value, Dividend Reinvestment Plan	2	2	7	6
Stock Issued During Period, Value, Employee Benefit Plan	18	29	708	614
Stock Repurchased During Period, Value	762	330	2,180	1,949
Additional Paid-in Capital [Member]
Equity [Abstract]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	435,787	470,709	435,787	470,709	444,162	465,406	473,323	494,202
Stock Issued During Period, Value, Dividend Reinvestment Plan	42	45	128	134
Stock Issued During Period, Value, Employee Benefit Plan	5,851	4,499	11,859	11,980
Stock Repurchased During Period, Value	(14,268)	(7,158)	(41,606)	(35,607)
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	435,787	470,709	435,787	470,709	444,162	465,406	473,323	494,202
Stock Issued During Period, Value, Dividend Reinvestment Plan	42	45	128	134
Stock Issued During Period, Value, Employee Benefit Plan	5,851	4,499	11,859	11,980
Stock Repurchased During Period, Value	14,268	7,158	41,606	35,607
Retained Earnings [Member]
Equity [Abstract]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	1,149,034	1,104,219	1,149,034	1,104,219	1,145,911	1,124,590	1,088,379	1,070,655
Net income	18,976	31,937	72,141	82,032
Dividends, Common Stock, Cash	(15,853)	(16,097)	(47,697)	(48,468)
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	1,149,034	1,104,219	1,149,034	1,104,219	1,145,911	1,124,590	1,088,379	1,070,655
Net income	18,976	31,937	72,141	82,032
Dividends, Common Stock, Cash	15,853	16,097	47,697	48,468
AOCI Attributable to Parent [Member]
Equity [Abstract]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	(418,591)	(399,251)	(418,591)	(399,251)	(401,321)	(414,343)	(412,176)	(413,951)
Other comprehensive income (loss), net of tax	(17,270)	12,925	(4,248)	14,700
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	(418,591)	(399,251)	(418,591)	(399,251)	(401,321)	(414,343)	(412,176)	(413,951)
Other comprehensive income (loss), net of tax	(17,270)	12,925	(4,248)	14,700
Noncontrolling Interest [Member]
Equity [Abstract]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	41,335	40,297	41,335	40,297	40,281	38,721	39,034	38,670
Net income	1,734	1,129	3,266	3,594
Other comprehensive income (loss), net of tax	(476)	355	(450)	(344)
Dividends, Common Stock, Cash	(204)	(221)	(202)	(1,623)
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	41,335	40,297	41,335	40,297	$ 40,281	$ 38,721	$ 39,034	$ 38,670
Net income	1,734	1,129	3,266	3,594
Other comprehensive income (loss), net of tax	(476)	355	(450)	(344)
Dividends, Common Stock, Cash	$ 204	$ 221	$ 202	$ 1,623