MORTGAGE-BACKED SECURITIES (Schedule of Amortized Cost and Fair Values of Mortgage-Backed Securities) (Details) - USD ($) $ in Thousands	Mar. 31, 2020		Jun. 30, 2019
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	$ 3,495		$ 3,995
Gross Unrealized Gains	130		85
Gross Unrealized Losses
Fair Value	3,625		4,080
Agency [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	101,615		107,448
Gross Unrealized Gains	213		954
Gross Unrealized Losses	(1,820)		(570)
Fair Value	100,008		107,832
Private-label [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	695		883
Gross Unrealized Gains	2		5
Gross Unrealized Losses	(24)		(12)
Fair Value	673	[1]	876
Collateralized Mortgage Obligations [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	102,310		108,331
Gross Unrealized Gains	215		959
Gross Unrealized Losses	(1,844)		(582)
Fair Value	$ 100,681		$ 108,708

[1] Fair value estimate provided by the Company's independent third party valuation consultant.