Equity (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Beginning Balance	$ 1,268,788	$ 1,374,704
Net (loss) income	(20,860)	7,410
Other comprehensive income (loss)	32,872	(30,283)
Dividend reinvestment	51	53
Capital stock issued under employee benefit and stock plans	2,209	2,384
Purchase of capital stock	(51)	(53)
Cash dividends	(16,627)	(16,565)
Ending Balance	1,266,382	1,337,650
Capital stock [Member]
Beginning Balance	103,654	103,026
Dividend reinvestment	2	2
Capital stock issued under employee benefit and stock plans	410	516
Purchase of capital stock	(2)	(2)
Ending Balance	104,064	103,542
Additional paid-in capital [Member]
Beginning Balance	538,575	528,827
Dividend reinvestment	49	51
Capital stock issued under employee benefit and stock plans	1,799	1,868
Purchase of capital stock	(49)	(51)
Ending Balance	540,374	530,695
Retained earnings [Member]
Beginning Balance	1,004,898	1,076,862
Net (loss) income	(21,675)	6,466
Cash dividends	(16,627)	(16,565)
Ending Balance	966,596	1,066,763
Accumulated other comprehensive loss [Member]
Beginning Balance	(417,242)	(373,543)
Other comprehensive income (loss)	31,594	(28,891)
Ending Balance	(385,648)	(402,434)
Non-controlling interest [Member]
Beginning Balance	38,903	39,532
Net (loss) income	815	944
Other comprehensive income (loss)	1,278	(1,392)
Cash dividends	0	0
Ending Balance	$ 40,996	$ 39,084