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Securities - Schedule of Contractual Maturity of Securities Available for Sale, Excluding Equity Securities (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013
Schedule of Available-for-sale Securities [Line Items]
1 year or less, Amortized Cost	$ 30,013
1 year - 5 years, Amortized Cost	129,080
5 years - 10 years, Amortized Cost	174,686
After 10 years, Amortized Cost	44,258
Total, Amortized Cost	378,037
1 year or less, Fair Value	29,950
1 year - 5 years, Fair Value	129,346
5 years - 10 years, Fair Value	175,054
After 10 years, Fair Value	42,967
Total, Fair Value	377,317
Total debt securities, Amortized Cost	726,406
Total debt securities, Fair Value	723,300
Residential & Multi Family Mortgage [Member]
Schedule of Available-for-sale Securities [Line Items]
Mortgage & asset backed securities, Amortized Cost	274,041
Mortgage & asset backed securities, Fair Value	271,337
Pooled SBA [Member]
Schedule of Available-for-sale Securities [Line Items]
Mortgage & asset backed securities, Amortized Cost	73,333
Mortgage & asset backed securities, Fair Value	73,663
Commercial Mortgage [Member]
Schedule of Available-for-sale Securities [Line Items]
Mortgage & asset backed securities, Amortized Cost	995
Mortgage & asset backed securities, Fair Value	$ 983

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Amount of available-for-sale debt securities at cost, net of adjustments, maturing in the sixth fiscal year through the tenth fiscal year following the latest fiscal year. Adjustments include, but are not limited to, accretion, amortization, collection of cash, previous other-than-temporary impairments (OTTI) recognized in earnings (less any cumulative-effect adjustments, as defined) and fair value hedge accounting adjustments.

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Amount of available-for-sale debt securities at cost, net of adjustments, maturing in the second fiscal year through the fifth fiscal year following the latest fiscal year. Adjustments include, but are not limited to, accretion, amortization, collection of cash, previous other-than-temporary impairments (OTTI) recognized in earnings (less any cumulative-effect adjustments, as defined) and fair value hedge accounting adjustments.

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