MORTGAGE-BACKED SECURITIES (Narrative) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014	Mar. 31, 2013	Jun. 30, 2013
Schedule of Held-to-maturity Securities [Line Items]
Investment securities - held to maturity	$ 22,991		$ 22,991		$ 26,420
Purchases of mortgage-backed securities			86,212	103,207
Impairment of investment in auction rate securities	(43)	4	(43)	4
OTTI recognized in other comprehensive income	38	212	294	697
Collateralized Mortgage Obligations [Member]
Schedule of Held-to-maturity Securities [Line Items]
Investment securities - held to maturity	208,775		208,775		139,268
MBS comprised of adjustable or floating rate investments	208,800		208,800		139,300
Percent of MBS comprised of adjustable or floating rate investments	100.00%		100.00%		100.00%
Mortgage-backed securities pledged as collateral	144,900		144,900		123,700
Mortgage-backed securities pledged as collateral, fair value	146,100		146,100		123,800
Mortgage-backed securities pledged as collateral, excess collateral	33,900		33,900		20,900
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Schedule of Held-to-maturity Securities [Line Items]
Investment securities - held to maturity	206,067		206,067		135,621
Increase in mortgage-backed securities			69,500
Proceeds from repayments mortgage-backed securities			13,400
Purchases of mortgage-backed securities			86,200
Mortgage-backed Securities, Issued by Private Enterprises [Member]
Schedule of Held-to-maturity Securities [Line Items]
Investment securities - held to maturity	2,708		2,708		3,647
Proceeds from repayments mortgage-backed securities			1,300
Accretion of OTTI on securities held to maturity			(293)
Credit impairment charge on private-label CMO	(43)		(43)
Impairment of investment in auction rate securities			(62)
OTTI recognized in other comprehensive income			$ 19