SECURITIES - SCHEDULE OF UNREALIZED LOSS ON INVESTMENTS (Details) $ in Thousands	Jun. 30, 2016 USD ($) security	Jun. 30, 2015 USD ($) security
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Available-for-sale securities in loss position for less than 12 months, Fair Value	$ 15,833	$ 22,102
Available-for-sale securities in loss position for less than 12 months, Gross Unrealized Losses	(15)	(374)
Available-for-sale securities in loss position for more than 12 months, Fair Value	22,057	24,974
Available-for-sale securities in loss position for more than 12 months, Gross Unrealized Losses	(192)	(946)
Available-for-sale securities in loss position, Total, Fair Value	37,890	47,076
Available-for-sale securities in loss position, Total, Gross Unrealized Losses	(207)	(1,320)
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Held-to-maturity securities in loss position for less than 12 months, Fair Value	15,140	23,450
Held-to-maturity securities for less than 12 months, Gross Unrealized Losses	(420)	(1,802)
Held-to-maturity securities in loss position for more than 12 months, Fair Value	53,372	67,090
Held-to-maturity securities in loss position for more than 12 months, Gross Unrealized Losses	(9,625)	(10,947)
Held-to-maturity securities in loss position, Total, Fair Value	68,512	90,540
Held-to-maturity securities in loss position, Total, Gross Unrealized Losses	$ (10,045)	$ (12,749)
Number of securities in a continuous loss position | security	26	32
Mortgage-backed securities (RMBS)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Available-for-sale securities in loss position for less than 12 months, Fair Value	$ 0	$ 1,644
Available-for-sale securities in loss position for less than 12 months, Gross Unrealized Losses	0	(3)
Available-for-sale securities in loss position for more than 12 months, Fair Value	5,094	24,974
Available-for-sale securities in loss position for more than 12 months, Gross Unrealized Losses	(23)	(946)
Available-for-sale securities in loss position, Total, Fair Value	5,094	26,618
Available-for-sale securities in loss position, Total, Gross Unrealized Losses	(23)	(949)
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Held-to-maturity securities in loss position for less than 12 months, Fair Value	15,140	23,450
Held-to-maturity securities for less than 12 months, Gross Unrealized Losses	(420)	(1,802)
Held-to-maturity securities in loss position for more than 12 months, Fair Value	53,372	67,090
Held-to-maturity securities in loss position for more than 12 months, Gross Unrealized Losses	(9,625)	(10,947)
Held-to-maturity securities in loss position, Total, Fair Value	68,512	90,540
Held-to-maturity securities in loss position, Total, Gross Unrealized Losses	(10,045)	(12,749)
U.S. agencies
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Available-for-sale securities in loss position for less than 12 months, Fair Value	0	369
Available-for-sale securities in loss position for less than 12 months, Gross Unrealized Losses	0	(2)
Available-for-sale securities in loss position for more than 12 months, Fair Value	5,094	24,974
Available-for-sale securities in loss position for more than 12 months, Gross Unrealized Losses	(23)	(946)
Available-for-sale securities in loss position, Total, Fair Value	5,094	25,343
Available-for-sale securities in loss position, Total, Gross Unrealized Losses	(23)	(948)
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Held-to-maturity securities in loss position for less than 12 months, Fair Value	129	0
Held-to-maturity securities for less than 12 months, Gross Unrealized Losses	(1)	0
Held-to-maturity securities in loss position for more than 12 months, Fair Value	0	0
Held-to-maturity securities in loss position for more than 12 months, Gross Unrealized Losses	0	0
Held-to-maturity securities in loss position, Total, Fair Value	129	0
Held-to-maturity securities in loss position, Total, Gross Unrealized Losses	(1)	0
Non-agency
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Available-for-sale securities in loss position for less than 12 months, Fair Value	0	1,275
Available-for-sale securities in loss position for less than 12 months, Gross Unrealized Losses	0	(1)
Available-for-sale securities in loss position for more than 12 months, Fair Value	0	0
Available-for-sale securities in loss position for more than 12 months, Gross Unrealized Losses	0	0
Available-for-sale securities in loss position, Total, Fair Value	0	1,275
Available-for-sale securities in loss position, Total, Gross Unrealized Losses	0	(1)
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Held-to-maturity securities in loss position for less than 12 months, Fair Value	15,011	23,450
Held-to-maturity securities for less than 12 months, Gross Unrealized Losses	(419)	(1,802)
Held-to-maturity securities in loss position for more than 12 months, Fair Value	53,372	67,090
Held-to-maturity securities in loss position for more than 12 months, Gross Unrealized Losses	(9,625)	(10,947)
Held-to-maturity securities in loss position, Total, Fair Value	68,383	90,540
Held-to-maturity securities in loss position, Total, Gross Unrealized Losses	(10,044)	(12,749)
Other Debt Securities
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Available-for-sale securities in loss position for less than 12 months, Fair Value	15,833	20,458
Available-for-sale securities in loss position for less than 12 months, Gross Unrealized Losses	(15)	(371)
Available-for-sale securities in loss position for more than 12 months, Fair Value	16,963	0
Available-for-sale securities in loss position for more than 12 months, Gross Unrealized Losses	(169)	0
Available-for-sale securities in loss position, Total, Fair Value	32,796	20,458
Available-for-sale securities in loss position, Total, Gross Unrealized Losses	(184)	(371)
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Held-to-maturity securities in loss position for less than 12 months, Fair Value	0	0
Held-to-maturity securities for less than 12 months, Gross Unrealized Losses	0	0
Held-to-maturity securities in loss position for more than 12 months, Fair Value	0	0
Held-to-maturity securities in loss position for more than 12 months, Gross Unrealized Losses	0	0
Held-to-maturity securities in loss position, Total, Fair Value	0	0
Held-to-maturity securities in loss position, Total, Gross Unrealized Losses	0	0
U.S. agencies
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Available-for-sale securities in loss position for less than 12 months, Fair Value	0
Available-for-sale securities in loss position for less than 12 months, Gross Unrealized Losses	0
Available-for-sale securities in loss position for more than 12 months, Fair Value	0
Available-for-sale securities in loss position for more than 12 months, Gross Unrealized Losses	0
Available-for-sale securities in loss position, Total, Fair Value	0
Available-for-sale securities in loss position, Total, Gross Unrealized Losses	0
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Held-to-maturity securities in loss position for less than 12 months, Fair Value	0
Held-to-maturity securities for less than 12 months, Gross Unrealized Losses	0
Held-to-maturity securities in loss position for more than 12 months, Fair Value	0
Held-to-maturity securities in loss position for more than 12 months, Gross Unrealized Losses	0
Held-to-maturity securities in loss position, Total, Fair Value	0
Held-to-maturity securities in loss position, Total, Gross Unrealized Losses	0
Municipal
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Available-for-sale securities in loss position for less than 12 months, Fair Value	10,267	1,358
Available-for-sale securities in loss position for less than 12 months, Gross Unrealized Losses	(10)	(86)
Available-for-sale securities in loss position for more than 12 months, Fair Value	0	0
Available-for-sale securities in loss position for more than 12 months, Gross Unrealized Losses	0	0
Available-for-sale securities in loss position, Total, Fair Value	10,267	1,358
Available-for-sale securities in loss position, Total, Gross Unrealized Losses	(10)	(86)
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Held-to-maturity securities in loss position for less than 12 months, Fair Value	0	0
Held-to-maturity securities for less than 12 months, Gross Unrealized Losses	0	0
Held-to-maturity securities in loss position for more than 12 months, Fair Value	0	0
Held-to-maturity securities in loss position for more than 12 months, Gross Unrealized Losses	0	0
Held-to-maturity securities in loss position, Total, Fair Value	0	0
Held-to-maturity securities in loss position, Total, Gross Unrealized Losses	0	0
Non-agency
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Available-for-sale securities in loss position for less than 12 months, Fair Value	5,566	19,100
Available-for-sale securities in loss position for less than 12 months, Gross Unrealized Losses	(5)	(285)
Available-for-sale securities in loss position for more than 12 months, Fair Value	16,963	0
Available-for-sale securities in loss position for more than 12 months, Gross Unrealized Losses	(169)	0
Available-for-sale securities in loss position, Total, Fair Value	22,529	19,100
Available-for-sale securities in loss position, Total, Gross Unrealized Losses	(174)	(285)
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Held-to-maturity securities in loss position for less than 12 months, Fair Value	0	0
Held-to-maturity securities for less than 12 months, Gross Unrealized Losses	0	0
Held-to-maturity securities in loss position for more than 12 months, Fair Value	0	0
Held-to-maturity securities in loss position for more than 12 months, Gross Unrealized Losses	0	0
Held-to-maturity securities in loss position, Total, Fair Value	0	0
Held-to-maturity securities in loss position, Total, Gross Unrealized Losses	$ 0	$ 0