CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($)	Total	Preferred Shares	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)
Beginning Balance (in shares) at Jun. 30, 2020		14,700	17,347,774
Beginning Balance at Jun. 30, 2020	$ 111,913,000	$ 15,000	$ 17,348,000	$ 62,043,000	$ 108,536,000	$ (76,029,000)
Net loss	(41,651,000)
Cash flow hedges, net of taxes	11,406,000					11,406,000
Change in the funded status of retiree benefit obligations, net of taxes	19,294,000					19,294,000
ESOP compensation expense, including reclassifications (in shares)			398,771
ESOP compensation expense, including reclassifications	2,203,000		$ 398,000	1,805,000
Share-based compensation	2,368,000			2,368,000
Stock option exercises (in shares)			106,248
Issuance of common stock and stock option exercises	0		$ 107,000	(107,000)
Cumulative preferred dividends, undeclared and unpaid	(574,000)				(574,000)
Ending Balance (in shares) at Jun. 30, 2021		14,700	17,852,793
Ending Balance at Jun. 30, 2021	104,959,000	$ 15,000	$ 17,853,000	66,109,000	66,311,000	(45,329,000)
Net loss	(15,661,000)
Cash flow hedges, net of taxes	(2,485,000)					(2,485,000)
Change in the funded status of retiree benefit obligations, net of taxes	9,383,000					9,383,000
ESOP compensation expense, including reclassifications (in shares)			371,566
ESOP compensation expense, including reclassifications	3,644,000		$ 373,000	3,271,000
Share-based compensation	3,347,000			3,347,000
Stock option exercises (in shares)			240,607
Issuance of common stock and stock option exercises	(490,000)		$ 240,000	(730,000)
Cumulative preferred dividends, undeclared and unpaid	(2,051,000)				(2,051,000)
Ending Balance (in shares) at Jun. 30, 2022		14,700	18,464,966
Ending Balance at Jun. 30, 2022	104,748,000	$ 15,000	$ 18,466,000	71,997,000	52,701,000	(38,431,000)
Net loss	(79,180,000)
Cash flow hedges, net of taxes	(2,867,000)					(2,867,000)
Change in the funded status of retiree benefit obligations, net of taxes	8,467,000					8,467,000
ESOP compensation expense, including reclassifications (in shares)			937,848
ESOP compensation expense, including reclassifications	4,665,000		$ 938,000	3,727,000
Share-based compensation	3,645,000			3,645,000
Stock option exercises (in shares)			340,951
Issuance of common stock and stock option exercises	0		$ 341,000	(341,000)
Cumulative preferred dividends, undeclared and unpaid	(1,366,000)	$ (15,000)	$ 399,000	(1,750,000)
Dividends, Paid-in-kind, Shares		(14,700)	399,208
Ending Balance (in shares) at Jun. 30, 2023		0	20,142,973
Ending Balance at Jun. 30, 2023	$ 38,112,000	$ 0	$ 20,144,000	$ 77,278,000	$ (26,479,000)	$ (32,831,000)