INVESTMENT SECURITIES - Amortized Cost and Estimated Fair Value (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Jun. 30, 2019
Securities available for sale
Amortized Cost, Preferred stock	$ 6,007
Estimated Fair Value, Preferred stock	4,668
Total Amortized Cost, Available-For-Sale Debt Securities and Preferred Stock	74,286	$ 92,088
Total Gross Unrealized Gain, Available-For-Sale Debt Securities and Preferred Stock	765	708
Total Gross Unrealized Loss, Available-For-Sale Debt Securities and Preferred Stock	(1,420)	(1,061)
Total Estimated Fair Value, Available-For-Sale Debt Securities and Preferred Stock	73,631	91,735
Securities held to maturity:
Amortized Cost	4,139	3,873
Estimated fair value	4,182	3,887
U.S. Government and agency obligations
Securities available for sale
Total Amortized Cost	61,915	70,706
Total Gross Unrealized Gains	431	164
Gross Unrealized Losses, Debt Securities		(3)
Estimated Fair Value, Debt Securities	62,346	70,867
Mortgage-backed securities – residential
Securities available for sale
Total Amortized Cost	85	109
Total Gross Unrealized Gains		3
Estimated Fair Value, Debt Securities	85	112
Asset-backed securities
Securities available for sale
Total Amortized Cost	67	75
Total Gross Unrealized Gains	42	55
Gross Unrealized Losses, Debt Securities	(4)	(2)
Estimated Fair Value, Debt Securities	105	128
Collateralized mortgage obligations - residential
Securities available for sale
Total Amortized Cost	450	525
Total Gross Unrealized Gains	261	401
Gross Unrealized Losses, Debt Securities	(56)	(37)
Estimated Fair Value, Debt Securities	655	889
Municipal obligations
Securities available for sale
Total Amortized Cost	5,762	14,666
Total Gross Unrealized Gains	10	33
Estimated Fair Value, Debt Securities	5,772	14,699
Securities held to maturity:
Amortized Cost	4,139	3,873
Gross Unrealized Gains	43	14
Estimated fair value	4,182	3,887
Debt Securities
Securities available for sale
Total Amortized Cost	68,279	86,081
Total Gross Unrealized Gains	744	656
Gross Unrealized Losses, Debt Securities	(60)	(42)
Estimated Fair Value, Debt Securities	68,963	86,695
Preferred stocks
Securities available for sale
Amortized Cost, Preferred stock	6,007	6,007
Gross Unrealized Gains, Preferred stock	21	52
Gross Unrealized Loss, Preferred stock	(1,360)	(1,019)
Estimated Fair Value, Preferred stock	$ 4,668	$ 5,040