Consolidated Statement Of Changes In Equity - USD ($) $ in Thousands	Total	Common And Treasury Stock [Member]	Treasury Stock [Member]	Number Of Shares, Net Of Treasury [Member]	Additional Paid-In Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Loss [Member]	Parent [Member]	Noncontrolling Interest [Member]	Redeemable Common Stock [Member]
Balance, Number of Shares at Jun. 30, 2019		81,459,717	(24,891,292)	56,568,425
Balance at Jun. 30, 2019	$ 317,342	$ 80	$ (286,951)		$ 276,997	$ 523,028	$ (195,812)	$ 317,342	$ 0
Redeemable Common Stock, Balance at Jun. 30, 2019	107,672
Restricted stock granted, shares		568,000		568,000
Stock-based compensation charge (Note 17)	1,873				1,873			1,873
Reversal of stock-based compensation charge (Note 17)	$ (145)				(145)			(145)
Reversal of stock-based compensation charge (Note 17), shares	(17,500)			(17,500)
Stock based-compensation charge related to equity accounted investment (Note 9)	$ 71				71			71
Transfer from redeemable common stock to additional paid-in-capital (Note 14)	22,693				22,693			22,693	0	$ (22,693)
Net loss	(78,358)					(78,358)		(78,358)	0
Other comprehensive income (loss) (Note 15)	$ 26,737						26,737	26,737	0
Balance, Number of Shares at Jun. 30, 2020	57,118,925	82,010,217	(24,891,292)	57,118,925
Balance at Jun. 30, 2020	$ 290,213	$ 80	$ (286,951)		301,489	444,670	(169,075)	290,213	0
Redeemable Common Stock, Balance at Jun. 30, 2020	84,979
Restricted stock granted, shares		254,560		254,560
Exercise of stock options	$ 53				53			53
Exercise of stock options, shares	17,335	17,335		17,335
Stock-based compensation charge (Note 17)	$ 1,430				1,430			1,430
Reversal of stock-based compensation charge (Note 17)	(1,086)				(1,086)			(1,086)
Reversal of stock-based compensation charge (Note 17), shares		(674,200)		(674,200)
Stock based-compensation charge related to equity accounted investment (Note 9)	(25)				(25)			(25)
Transfer from redeemable common stock to additional paid-in-capital (Note 14)	98				98			98
Net loss	(38,057)					(38,057)		(38,057)	0
Other comprehensive income (loss) (Note 15)	$ 23,354						23,354	23,354	0
Balance, Number of Shares at Jun. 30, 2021	56,716,620	81,607,912	(24,891,292)	56,716,620
Balance at Jun. 30, 2021	$ 275,980	$ 80	$ (286,951)		301,959	406,613	(145,721)	275,980	0
Redeemable Common Stock, Balance at Jun. 30, 2021	84,979
Stock issued	16,658	$ 3			16,655			16,658
Stock issued, shares		3,185,079		3,185,079
Restricted stock granted	0				0			0
Restricted stock granted, shares		2,278,643		2,278,643
Exercise of stock options	$ 760				760			760
Exercise of stock options, shares	249,521	249,521		249,521
Stock-based compensation charge (Note 17)	$ 3,082				3,082			3,082
Reversal of stock-based compensation charge (Note 17)	(120)				(120)			(120)
Reversal of stock-based compensation charge (Note 17), shares		(105,542)		(105,542)
Stock based-compensation charge related to equity accounted investment (Note 9)	5				5			5
Transfer from redeemable common stock to additional paid-in-capital (Note 14)	5,550				5,550			5,550		$ 5,550
Net loss	(43,876)					(43,876)		(43,876)	0
Other comprehensive income (loss) (Note 15)	$ (23,119)						(23,119)	(23,119)	0
Balance, Number of Shares at Jun. 30, 2022	62,324,321	87,215,613	(24,891,292)	62,324,321
Balance at Jun. 30, 2022	$ 234,920	$ 83	$ (286,951)		$ 327,891	$ 362,737	$ (168,840)	$ 234,920	$ 0
Redeemable Common Stock, Balance at Jun. 30, 2022	$ 79,429