SECURITIES - NARRATIVE (Details) $ in Thousands		12 Months Ended
		Jun. 30, 2019 USD ($) security	Jun. 30, 2018 USD ($) security	Jun. 30, 2017 USD ($)	Jun. 30, 2016 USD ($)
Marketable Securities [Line Items]
Securities - available for sale		$ 227,513	$ 180,305
Gain on sale of available-for-sale securities		842	1,269	$ 7,386
Loss on sale of senior support securities			861
Debt securities available-for-sale and held-to-maturity pledged to secure borrowings		$ 3,555	$ 2,540
Securities in a continuous loss position for a period of more than 12 months | security		21	26
Securities in a continuous loss position for a period of less than 12 months | security		3	11
Proceeds from sale of trading securities			$ 8,700
Gain on sale of trading securities			$ 282
Number of trading securities sold | security			2
Securities trading			$ 8,327
Number of available-for-sale securities sold | security		6
Carrying value of available-for-sale securities sold		$ 15,131
Gain on sale of available-for-sale securities		709	(300)	3,920
Non-Agency RMBS
Marketable Securities [Line Items]
Securities - available for sale	[1]	$ 13,025	17,443
Number of securities with cumulative credit losses | security		1
Carrying amount of securities with cumulative credit losses		$ 3,143
Credit losses recognized in earnings		821	0	15,528	$ 20,865
Other than temporary impairment recognized in earnings		$ 821	$ 156	$ 1,964
RMBS, Super Senior Securities
Marketable Securities [Line Items]
Available-for-sale, number of securities | security		14
RMBS, Mezzanine Z-Tranche Securities
Marketable Securities [Line Items]
Available-for-sale, number of securities | security			2
Gain on sale of available-for-sale securities			$ 153
RMBS, Senior-Support Securities
Marketable Securities [Line Items]
Number of senior support securities sold | security			1

[1] Private sponsors of securities collateralized primarily by pools of 1-4 family residential first mortgages. Primarily super senior securities secured by prime, Alt-A or pay-option ARM mortgages.