UNREALIZED LOSSES ON SECURITIES (Schedule of Gross Unrealized Losses and Fair Value) (Details) - USD ($) $ in Thousands		Mar. 31, 2020	Jun. 30, 2019
Schedule of Investment Securities [Line Items]
Fair Value		$ 190,871	$ 38,100
Gross Unrealized Losses		(7,167)	(270)
Twelve Months or Greater
Fair Value		31,248	42,719
Gross Unrealized Losses		(1,120)	(595)
Total
Fair Value		222,119	80,819
Gross Unrealized Losses		(8,287)	(865)
Corporate Debt Securities [Member]
Schedule of Investment Securities [Line Items]
Fair Value		101,644	11,728
Gross Unrealized Losses		(4,819)	(86)
Twelve Months or Greater
Fair Value		8,499	17,077
Gross Unrealized Losses		(325)	(121)
Total
Fair Value		110,143	28,805
Gross Unrealized Losses		(5,144)	(207)
Foreign Debt Securities [Member]
Schedule of Investment Securities [Line Items]
Fair Value	[1]	31,286	2,004
Gross Unrealized Losses	[1]	(1,299)	(2)
Twelve Months or Greater
Fair Value	[1]		5,699
Gross Unrealized Losses	[1]		(73)
Total
Fair Value	[1]	31,286	7,703
Gross Unrealized Losses	[1]	(1,299)	(75)
Collateralized Mortgage Obligations [Member]
Schedule of Investment Securities [Line Items]
Fair Value		57,941	24,368
Gross Unrealized Losses		(1,049)	(182)
Twelve Months or Greater
Fair Value		22,749	18,614
Gross Unrealized Losses		(795)	(400)
Total
Fair Value		80,690	42,982
Gross Unrealized Losses		$ (1,844)	(582)
Obligations of states and political subdivisions [Member]
Schedule of Investment Securities [Line Items]
Fair Value
Gross Unrealized Losses
Twelve Months or Greater
Fair Value			1,329
Gross Unrealized Losses			(1)
Total
Fair Value			1,329
Gross Unrealized Losses			$ (1)

[1] U.S. dollar denominated investment-grade corporate bonds of large foreign corporate issuers.