FAIR VALUE - LEVEL 3 ASSETS MEASURED ON RECURRING BASIS (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2024	Mar. 31, 2023
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Included in earnings—Mortgage banking income [Extensible Enumeration]	Mortgage banking and servicing rights income	Mortgage banking and servicing rights income	Mortgage banking and servicing rights income	Mortgage banking and servicing rights income
Included in other comprehensive income [Extensible Enumeration]	Other comprehensive income (loss)	Other comprehensive income (loss)	Other comprehensive income (loss)	Other comprehensive income (loss)
Recurring | Level 3
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Opening Balance	$ 235,751	$ 200,667	$ 230,448	$ 212,491
Included in earnings—Mortgage banking and servicing rights income	(152)	(956)	213	(1,495)
Included in other comprehensive income	1,517	1,231	4,708	(3,384)
Purchases, retentions, issues, sales and settlements:
Purchases/Retentions	239	30,152	2,474	30,558
Settlements	(32,546)	(54)	(33,034)	(7,130)
Closing balance	204,809	231,040	204,809	231,040
Change in unrealized gains or losses for the period included in earnings for assets held at the end of the reporting period	(152)	(956)	213	(1,495)
Principal payments and loans that were paid down or paid off	400	200	900	700
Market-driven changes in interest rates	200	(100)	1,100	300
Recurring | Level 3 | Available-for-sale Securities: Non-Agency MBS
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Opening Balance	207,708	175,123	205,005	186,814
Included in earnings—Mortgage banking and servicing rights income	0	0	0	0
Included in other comprehensive income	1,517	1,231	4,708	(3,384)
Purchases, retentions, issues, sales and settlements:
Purchases/Retentions	0	30,000	0	30,000
Settlements	(32,546)	(54)	(33,034)	(7,130)
Closing balance	176,679	206,300	176,679	206,300
Change in unrealized gains or losses for the period included in earnings for assets held at the end of the reporting period	0	0	0	0
Recurring | Level 3 | Servicing Rights
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Opening Balance	28,043	25,526	25,443	25,213
Included in earnings—Mortgage banking and servicing rights income	(152)	(282)	213	(375)
Included in other comprehensive income	0	0	0	0
Purchases, retentions, issues, sales and settlements:
Purchases/Retentions	239	152	2,474	558
Settlements	0	0	0	0
Closing balance	28,130	25,396	28,130	25,396
Change in unrealized gains or losses for the period included in earnings for assets held at the end of the reporting period	$ (152)	(282)	$ 213	(375)
Recurring | Level 3 | Derivative Instruments, net
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Opening Balance		18		464
Included in earnings—Mortgage banking and servicing rights income		(674)		(1,120)
Included in other comprehensive income		0		0
Purchases, retentions, issues, sales and settlements:
Purchases/Retentions		0		0
Settlements		0		0
Closing balance		(656)		(656)
Change in unrealized gains or losses for the period included in earnings for assets held at the end of the reporting period		$ (674)		$ (1,120)