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LOANS RECEIVABLE - Credit-Rating Classification of Loans Receivable (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Mar. 31, 2025	Mar. 31, 2024	Jun. 30, 2024
Total loans
Originated current fiscal year	$ 398,605		$ 398,605		$ 368,683
Originated fiscal year before current fiscal year	365,930		365,930		946,697
Originated two years before current fiscal year	907,991		907,991		1,627,496
Originated three years before current fiscal year	1,577,231		1,577,231		881,973
Originated four years before current fiscal year	839,629		839,629		333,600
Originated more than five years before current fiscal year	1,661,185		1,661,185		1,502,747
Revolving loans	99,878		99,878		87,554
Financing receivable, before allowance for credit loss, fee and loan in process	5,850,449		5,850,449		5,748,750
Total current period gross charge-offs
Originated current fiscal year, writeoff			0		0
Originated fiscal year before current fiscal year, writeoff			0		0
Originated two years before current fiscal year, writeoff			0		0
Originated three years before current fiscal year, writeoff			0		3,391
Originated four years before current fiscal year, writeoff			0		464
Originated more than five years before current fiscal year, writeoff			1,081		6,421
Revolving loans, writeoff			0		0
Total	372	$ 293	1,081	$ 6,753	10,276
Commercial
Total loans
Financing receivable, before allowance for credit loss, fee and loan in process	4,036,426		4,036,426		3,945,910
Commercial | Multi-family mortgage
Total loans
Originated current fiscal year	124,715		124,715		26,683
Originated fiscal year before current fiscal year	26,492		26,492		596,321
Originated two years before current fiscal year	609,524		609,524		949,690
Originated three years before current fiscal year	935,498		935,498		229,420
Originated four years before current fiscal year	229,214		229,214		201,611
Originated more than five years before current fiscal year	807,963		807,963		642,126
Revolving loans	0		0		0
Financing receivable, before allowance for credit loss, fee and loan in process	2,733,406		2,733,406		2,645,851
Total current period gross charge-offs
Originated current fiscal year, writeoff			0		0
Originated fiscal year before current fiscal year, writeoff			0		0
Originated two years before current fiscal year, writeoff			0		0
Originated three years before current fiscal year, writeoff			0		0
Originated four years before current fiscal year, writeoff			0		0
Originated more than five years before current fiscal year, writeoff			0		398
Revolving loans, writeoff			0		0
Total	0	35	0	389	398
Commercial | Nonresidential mortgage
Total loans
Originated current fiscal year	115,226		115,226		87,380
Originated fiscal year before current fiscal year	81,753		81,753		105,768
Originated two years before current fiscal year	103,676		103,676		199,829
Originated three years before current fiscal year	192,262		192,262		91,626
Originated four years before current fiscal year	110,057		110,057		44,598
Originated more than five years before current fiscal year	384,950		384,950		418,844
Revolving loans	150		150		30
Financing receivable, before allowance for credit loss, fee and loan in process	988,074		988,074		948,075
Total current period gross charge-offs
Originated current fiscal year, writeoff			0
Originated fiscal year before current fiscal year, writeoff			0
Originated two years before current fiscal year, writeoff			0
Originated three years before current fiscal year, writeoff			0
Originated four years before current fiscal year, writeoff			0
Originated more than five years before current fiscal year, writeoff			830		5,975
Revolving loans, writeoff			0
Total	332	253	830	5,975	5,975
Commercial | Commercial business
Total loans
Originated current fiscal year	12,900		12,900		12,152
Originated fiscal year before current fiscal year	10,265		10,265		8,273
Originated two years before current fiscal year	5,864		5,864		29,174
Originated three years before current fiscal year	22,655		22,655		18,679
Originated four years before current fiscal year	15,110		15,110		6,104
Originated more than five years before current fiscal year	11,520		11,520		11,620
Revolving loans	61,910		61,910		56,745
Financing receivable, before allowance for credit loss, fee and loan in process	140,224		140,224		142,747
Total current period gross charge-offs
Originated current fiscal year, writeoff			0		0
Originated fiscal year before current fiscal year, writeoff			0		0
Originated two years before current fiscal year, writeoff			0		0
Originated three years before current fiscal year, writeoff			0		3,391
Originated four years before current fiscal year, writeoff			0		464
Originated more than five years before current fiscal year, writeoff			242		11
Revolving loans, writeoff			0		0
Total	40	5	242	352	3,866
Commercial | Construction
Total loans
Originated current fiscal year	29,526		29,526		54,711
Originated fiscal year before current fiscal year	79,278		79,278		45,180
Originated two years before current fiscal year	4,290		4,290		14,284
Originated three years before current fiscal year	9,408		9,408		83,078
Originated four years before current fiscal year	43,099		43,099		2,602
Originated more than five years before current fiscal year	3,386		3,386		3,647
Revolving loans	5,735		5,735		5,735
Financing receivable, before allowance for credit loss, fee and loan in process	174,722		174,722		209,237
Total current period gross charge-offs
Originated current fiscal year, writeoff			0		0
Originated fiscal year before current fiscal year, writeoff			0		0
Originated two years before current fiscal year, writeoff			0		0
Originated three years before current fiscal year, writeoff			0		0
Originated four years before current fiscal year, writeoff			0		0
Originated more than five years before current fiscal year, writeoff			0		0
Revolving loans, writeoff			0		0
Total	0	0	0	0	0
Residential
Total loans
Originated current fiscal year	114,684		114,684		185,034
Originated fiscal year before current fiscal year	165,920		165,920		185,246
Originated two years before current fiscal year	179,736		179,736		432,142
Originated three years before current fiscal year	415,339		415,339		458,696
Originated four years before current fiscal year	441,593		441,593		77,442
Originated more than five years before current fiscal year	444,096		444,096		417,200
Revolving loans	97		97		291
Financing receivable, before allowance for credit loss, fee and loan in process	1,761,465		1,761,465		1,756,051
Total current period gross charge-offs
Originated current fiscal year, writeoff			0		0
Originated fiscal year before current fiscal year, writeoff			0		0
Originated two years before current fiscal year, writeoff			0		0
Originated three years before current fiscal year, writeoff			0		0
Originated four years before current fiscal year, writeoff			0		0
Originated more than five years before current fiscal year, writeoff			2		37
Revolving loans, writeoff			0		0
Total	0	0	2	37	37
Consumer
Total loans
Financing receivable, before allowance for credit loss, fee and loan in process	52,558		52,558		46,789
Consumer | Home equity loans
Total loans
Originated current fiscal year	806		806		1,919
Originated fiscal year before current fiscal year	1,848		1,848		5,698
Originated two years before current fiscal year	4,711		4,711		2,173
Originated three years before current fiscal year	1,956		1,956		347
Originated four years before current fiscal year	313		313		1,019
Originated more than five years before current fiscal year	8,210		8,210		8,320
Revolving loans	31,855		31,855		24,628
Financing receivable, before allowance for credit loss, fee and loan in process	49,699		49,699		44,104
Total current period gross charge-offs
Originated current fiscal year, writeoff			0		0
Originated fiscal year before current fiscal year, writeoff			0		0
Originated two years before current fiscal year, writeoff			0		0
Originated three years before current fiscal year, writeoff			0		0
Originated four years before current fiscal year, writeoff			0		0
Originated more than five years before current fiscal year, writeoff			2		0
Revolving loans, writeoff			0		0
Total	0	0	2	0	0
Consumer | Other consumer
Total loans
Originated current fiscal year	748		748		804
Originated fiscal year before current fiscal year	374		374		211
Originated two years before current fiscal year	190		190		204
Originated three years before current fiscal year	113		113		127
Originated four years before current fiscal year	243		243		224
Originated more than five years before current fiscal year	1,060		1,060		990
Revolving loans	131		131		125
Financing receivable, before allowance for credit loss, fee and loan in process	2,859		2,859		2,685
Total current period gross charge-offs
Originated current fiscal year, writeoff			0		0
Originated fiscal year before current fiscal year, writeoff			0		0
Originated two years before current fiscal year, writeoff			0		0
Originated three years before current fiscal year, writeoff			0		0
Originated four years before current fiscal year, writeoff			0		0
Originated more than five years before current fiscal year, writeoff			5		0
Revolving loans, writeoff			0		0
Total	0	$ 0	5	$ 0	0
Pass | Commercial | Multi-family mortgage
Total loans
Originated current fiscal year	124,715		124,715		26,683
Originated fiscal year before current fiscal year	26,492		26,492		596,321
Originated two years before current fiscal year	609,524		609,524		949,690
Originated three years before current fiscal year	935,498		935,498		219,850
Originated four years before current fiscal year	217,374		217,374		201,611
Originated more than five years before current fiscal year	757,319		757,319		607,332
Revolving loans	0		0		0
Financing receivable, before allowance for credit loss, fee and loan in process	2,670,922		2,670,922		2,601,487
Pass | Commercial | Nonresidential mortgage
Total loans
Originated current fiscal year	115,226		115,226		87,380
Originated fiscal year before current fiscal year	81,753		81,753		105,768
Originated two years before current fiscal year	103,676		103,676		199,829
Originated three years before current fiscal year	192,262		192,262		90,312
Originated four years before current fiscal year	108,248		108,248		44,598
Originated more than five years before current fiscal year	367,604		367,604		389,680
Revolving loans	150		150		30
Financing receivable, before allowance for credit loss, fee and loan in process	968,919		968,919		917,597
Pass | Commercial | Commercial business
Total loans
Originated current fiscal year	12,811		12,811		12,152
Originated fiscal year before current fiscal year	10,265		10,265		8,273
Originated two years before current fiscal year	5,864		5,864		27,615
Originated three years before current fiscal year	21,489		21,489		18,242
Originated four years before current fiscal year	14,927		14,927		4,337
Originated more than five years before current fiscal year	9,692		9,692		7,863
Revolving loans	61,782		61,782		56,592
Financing receivable, before allowance for credit loss, fee and loan in process	136,830		136,830		135,074
Pass | Commercial | Construction
Total loans
Originated current fiscal year	29,526		29,526		51,261
Originated fiscal year before current fiscal year	74,778		74,778		45,180
Originated two years before current fiscal year	4,290		4,290		14,284
Originated three years before current fiscal year	9,408		9,408		62,584
Originated four years before current fiscal year	19,409		19,409		2,602
Originated more than five years before current fiscal year	3,386		3,386		3,647
Revolving loans	5,735		5,735		5,735
Financing receivable, before allowance for credit loss, fee and loan in process	146,532		146,532		185,293
Pass | Residential
Total loans
Originated current fiscal year	114,684		114,684		185,034
Originated fiscal year before current fiscal year	165,920		165,920		184,737
Originated two years before current fiscal year	179,246		179,246		431,346
Originated three years before current fiscal year	414,562		414,562		458,696
Originated four years before current fiscal year	441,402		441,402		77,442
Originated more than five years before current fiscal year	433,636		433,636		406,677
Revolving loans	97		97		291
Financing receivable, before allowance for credit loss, fee and loan in process	1,749,547		1,749,547		1,744,223
Pass | Consumer | Home equity loans
Total loans
Originated current fiscal year	806		806		1,919
Originated fiscal year before current fiscal year	1,751		1,751		5,698
Originated two years before current fiscal year	4,711		4,711		2,173
Originated three years before current fiscal year	1,870		1,870		347
Originated four years before current fiscal year	313		313		1,019
Originated more than five years before current fiscal year	8,017		8,017		8,086
Revolving loans	31,686		31,686		24,535
Financing receivable, before allowance for credit loss, fee and loan in process	49,154		49,154		43,777
Pass | Consumer | Other consumer
Total loans
Originated current fiscal year	748		748		804
Originated fiscal year before current fiscal year	374		374		211
Originated two years before current fiscal year	190		190		204
Originated three years before current fiscal year	113		113		127
Originated four years before current fiscal year	243		243		224
Originated more than five years before current fiscal year	1,060		1,060		990
Revolving loans	27		27		39
Financing receivable, before allowance for credit loss, fee and loan in process	2,755		2,755		2,599
Special Mention | Commercial | Multi-family mortgage
Total loans
Originated current fiscal year	0		0		0
Originated fiscal year before current fiscal year	0		0		0
Originated two years before current fiscal year	0		0		0
Originated three years before current fiscal year	0		0		0
Originated four years before current fiscal year	0		0		0
Originated more than five years before current fiscal year	0		0		6,475
Revolving loans	0		0		0
Financing receivable, before allowance for credit loss, fee and loan in process	0		0		6,475
Special Mention | Commercial | Nonresidential mortgage
Total loans
Originated current fiscal year	0		0		0
Originated fiscal year before current fiscal year	0		0		0
Originated two years before current fiscal year	0		0		0
Originated three years before current fiscal year	0		0		447
Originated four years before current fiscal year	952		952		0
Originated more than five years before current fiscal year	6,206		6,206		14,714
Revolving loans	0		0		0
Financing receivable, before allowance for credit loss, fee and loan in process	7,158		7,158		15,161
Special Mention | Commercial | Commercial business
Total loans
Originated current fiscal year	0		0		0
Originated fiscal year before current fiscal year	0		0		0
Originated two years before current fiscal year	0		0		1,559
Originated three years before current fiscal year	1,166		1,166		437
Originated four years before current fiscal year	131		131		0
Originated more than five years before current fiscal year	165		165		1,754
Revolving loans	0		0		0
Financing receivable, before allowance for credit loss, fee and loan in process	1,462		1,462		3,750
Special Mention | Commercial | Construction
Total loans
Originated current fiscal year	0		0		3,450
Originated fiscal year before current fiscal year	0		0		0
Originated two years before current fiscal year	0		0		0
Originated three years before current fiscal year	0		0		20,494
Originated four years before current fiscal year	3,196		3,196		0
Originated more than five years before current fiscal year	0		0		0
Revolving loans	0		0		0
Financing receivable, before allowance for credit loss, fee and loan in process	3,196		3,196		23,944
Special Mention | Residential
Total loans
Originated current fiscal year	0		0		0
Originated fiscal year before current fiscal year	0		0		0
Originated two years before current fiscal year	0		0		0
Originated three years before current fiscal year	0		0		0
Originated four years before current fiscal year	0		0		0
Originated more than five years before current fiscal year	309		309		1,453
Revolving loans	0		0		0
Financing receivable, before allowance for credit loss, fee and loan in process	309		309		1,453
Special Mention | Consumer | Home equity loans
Total loans
Originated current fiscal year	0		0		0
Originated fiscal year before current fiscal year	97		97		0
Originated two years before current fiscal year	0		0		0
Originated three years before current fiscal year	0		0		0
Originated four years before current fiscal year	0		0		0
Originated more than five years before current fiscal year	0		0		0
Revolving loans	98		98		93
Financing receivable, before allowance for credit loss, fee and loan in process	195		195		93
Special Mention | Consumer | Other consumer
Total loans
Originated current fiscal year	0		0		0
Originated fiscal year before current fiscal year	0		0		0
Originated two years before current fiscal year	0		0		0
Originated three years before current fiscal year	0		0		0
Originated four years before current fiscal year	0		0		0
Originated more than five years before current fiscal year	0		0		0
Revolving loans	0		0		0
Financing receivable, before allowance for credit loss, fee and loan in process	0		0		0
Substandard | Commercial | Multi-family mortgage
Total loans
Originated current fiscal year	0		0		0
Originated fiscal year before current fiscal year	0		0		0
Originated two years before current fiscal year	0		0		0
Originated three years before current fiscal year	0		0		9,570
Originated four years before current fiscal year	11,840		11,840		0
Originated more than five years before current fiscal year	50,644		50,644		28,319
Revolving loans	0		0		0
Financing receivable, before allowance for credit loss, fee and loan in process	62,484		62,484		37,889
Substandard | Commercial | Nonresidential mortgage
Total loans
Originated current fiscal year	0		0		0
Originated fiscal year before current fiscal year	0		0		0
Originated two years before current fiscal year	0		0		0
Originated three years before current fiscal year	0		0		867
Originated four years before current fiscal year	857		857		0
Originated more than five years before current fiscal year	11,140		11,140		14,450
Revolving loans	0		0		0
Financing receivable, before allowance for credit loss, fee and loan in process	11,997		11,997		15,317
Substandard | Commercial | Commercial business
Total loans
Originated current fiscal year	89		89		0
Originated fiscal year before current fiscal year	0		0		0
Originated two years before current fiscal year	0		0		0
Originated three years before current fiscal year	0		0		0
Originated four years before current fiscal year	52		52		1,767
Originated more than five years before current fiscal year	1,663		1,663		2,003
Revolving loans	128		128		153
Financing receivable, before allowance for credit loss, fee and loan in process	1,932		1,932		3,923
Substandard | Commercial | Construction
Total loans
Originated current fiscal year	0		0		0
Originated fiscal year before current fiscal year	4,500		4,500		0
Originated two years before current fiscal year	0		0		0
Originated three years before current fiscal year	0		0		0
Originated four years before current fiscal year	20,494		20,494		0
Originated more than five years before current fiscal year	0		0		0
Revolving loans	0		0		0
Financing receivable, before allowance for credit loss, fee and loan in process	24,994		24,994		0
Substandard | Residential
Total loans
Originated current fiscal year	0		0		0
Originated fiscal year before current fiscal year	0		0		509
Originated two years before current fiscal year	490		490		796
Originated three years before current fiscal year	777		777		0
Originated four years before current fiscal year	191		191		0
Originated more than five years before current fiscal year	10,151		10,151		9,070
Revolving loans	0		0		0
Financing receivable, before allowance for credit loss, fee and loan in process	11,609		11,609		10,375
Substandard | Consumer | Home equity loans
Total loans
Originated current fiscal year	0		0		0
Originated fiscal year before current fiscal year	0		0		0
Originated two years before current fiscal year	0		0		0
Originated three years before current fiscal year	86		86		0
Originated four years before current fiscal year	0		0		0
Originated more than five years before current fiscal year	193		193		234
Revolving loans	71		71		0
Financing receivable, before allowance for credit loss, fee and loan in process	350		350		234
Substandard | Consumer | Other consumer
Total loans
Originated current fiscal year	0		0		0
Originated fiscal year before current fiscal year	0		0		0
Originated two years before current fiscal year	0		0		0
Originated three years before current fiscal year	0		0		0
Originated four years before current fiscal year	0		0		0
Originated more than five years before current fiscal year	0		0		0
Revolving loans	3		3		0
Financing receivable, before allowance for credit loss, fee and loan in process	3		3		0
Doubtful | Commercial | Multi-family mortgage
Total loans
Originated current fiscal year	0		0		0
Originated fiscal year before current fiscal year	0		0		0
Originated two years before current fiscal year	0		0		0
Originated three years before current fiscal year	0		0		0
Originated four years before current fiscal year	0		0		0
Originated more than five years before current fiscal year	0		0		0
Revolving loans	0		0		0
Financing receivable, before allowance for credit loss, fee and loan in process	0		0		0
Doubtful | Commercial | Nonresidential mortgage
Total loans
Originated current fiscal year	0		0		0
Originated fiscal year before current fiscal year	0		0		0
Originated two years before current fiscal year	0		0		0
Originated three years before current fiscal year	0		0		0
Originated four years before current fiscal year	0		0		0
Originated more than five years before current fiscal year	0		0		0
Revolving loans	0		0		0
Financing receivable, before allowance for credit loss, fee and loan in process	0		0		0
Doubtful | Commercial | Commercial business
Total loans
Originated current fiscal year	0		0		0
Originated fiscal year before current fiscal year	0		0		0
Originated two years before current fiscal year	0		0		0
Originated three years before current fiscal year	0		0		0
Originated four years before current fiscal year	0		0		0
Originated more than five years before current fiscal year	0		0		0
Revolving loans	0		0		0
Financing receivable, before allowance for credit loss, fee and loan in process	0		0		0
Doubtful | Commercial | Construction
Total loans
Originated current fiscal year	0		0		0
Originated fiscal year before current fiscal year	0		0		0
Originated two years before current fiscal year	0		0		0
Originated three years before current fiscal year	0		0		0
Originated four years before current fiscal year	0		0		0
Originated more than five years before current fiscal year	0		0		0
Revolving loans	0		0		0
Financing receivable, before allowance for credit loss, fee and loan in process	0		0		0
Doubtful | Residential
Total loans
Originated current fiscal year	0		0		0
Originated fiscal year before current fiscal year	0		0		0
Originated two years before current fiscal year	0		0		0
Originated three years before current fiscal year	0		0		0
Originated four years before current fiscal year	0		0		0
Originated more than five years before current fiscal year	0		0		0
Revolving loans	0		0		0
Financing receivable, before allowance for credit loss, fee and loan in process	0		0		0
Doubtful | Consumer | Home equity loans
Total loans
Originated current fiscal year	0		0		0
Originated fiscal year before current fiscal year	0		0		0
Originated two years before current fiscal year	0		0		0
Originated three years before current fiscal year	0		0		0
Originated four years before current fiscal year	0		0		0
Originated more than five years before current fiscal year	0		0		0
Revolving loans	0		0		0
Financing receivable, before allowance for credit loss, fee and loan in process	0		0		0
Doubtful | Consumer | Other consumer
Total loans
Originated current fiscal year	0		0		0
Originated fiscal year before current fiscal year	0		0		0
Originated two years before current fiscal year	0		0		0
Originated three years before current fiscal year	0		0		0
Originated four years before current fiscal year	0		0		0
Originated more than five years before current fiscal year	0		0		0
Revolving loans	101		101		86
Financing receivable, before allowance for credit loss, fee and loan in process	$ 101		$ 101		$ 86

X

- Definition

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