CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Preferred Shares	Common Shares	Additional Paid-in Capital	Retained Earnings (Accumulated Deficit)	Accumulated Other Comprehensive Income (Loss)
Beginning Balance (in shares) at Jun. 30, 2021		14,700	17,852,793
Beginning Balance at Jun. 30, 2021	$ 104,959	$ 15	$ 17,853	$ 66,109	$ 66,311	$ (45,329)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(15,661)				(15,661)
Cash flow hedges, net of taxes	(2,485)					(2,485)
Change in the funded status of retiree benefit obligations, net of taxes	9,383					9,383
ESOP compensation expense, including reclassifications (in shares)			371,566
ESOP compensation expense, including reclassifications	3,644		$ 373	3,271
Share-based compensation	3,347			3,347
Issuance of common stock and stock option exercises (in shares)			240,607
Issuance of common stock and stock option exercises	(490)		$ 240	(730)
Cumulative preferred dividends, undeclared and unpaid	2,051				2,051
Ending Balance (in shares) at Jun. 30, 2022		14,700	18,464,966
Ending Balance at Jun. 30, 2022	104,748	$ 15	$ 18,466	71,997	52,701	(38,431)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(79,180)				(79,180)
Cash flow hedges, net of taxes	(2,867)					(2,867)
Change in the funded status of retiree benefit obligations, net of taxes	8,467					8,467
ESOP compensation expense, including reclassifications (in shares)			937,848
ESOP compensation expense, including reclassifications	4,665		$ 938	3,727
Share-based compensation	3,645			3,645
Issuance of common stock and stock option exercises (in shares)			340,951
Issuance of common stock and stock option exercises	0		$ 341	(341)
Cumulative preferred dividends, undeclared and unpaid (in shares)		(14,700)	399,208
Cumulative preferred dividends, undeclared and unpaid	(1,366)	$ (15)	$ 399	(1,750)
Ending Balance (in shares) at Jun. 30, 2023		0	20,142,973
Ending Balance at Jun. 30, 2023	38,112	$ 0	$ 20,144	77,278	(26,479)	(32,831)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(3,875)				(3,875)
Cash flow hedges, net of taxes	1,022					1,022
Change in the funded status of retiree benefit obligations, net of taxes	6,484					6,484
ESOP compensation expense, including reclassifications (in shares)			595,031
ESOP compensation expense, including reclassifications	1,694		$ 595	1,099
Share-based compensation	2,112			2,112
Issuance of common stock and stock option exercises (in shares)			526,323
Issuance of common stock and stock option exercises	0		$ 526	(526)
Ending Balance (in shares) at Jun. 30, 2024		0	21,264,327
Ending Balance at Jun. 30, 2024	$ 45,549	$ 0	$ 21,265	$ 79,963	$ (30,354)	$ (25,325)