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Securities - Schedule of Contractual Maturity of Securities Available for Sale, Excluding Equity Securities (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013
Schedule of Available-for-sale Securities [Line Items]
1 year or less, Amortized Cost	$ 31,192
1 year - 5 years, Amortized Cost	141,228
5 years - 10 years, Amortized Cost	165,713
After 10 years, Amortized Cost	40,106
Total, Amortized Cost	378,239
1 year or less, Fair Value	30,902
1 year - 5 years, Fair Value	141,410
5 years - 10 years, Fair Value	163,735
After 10 years, Fair Value	38,257
Total, Fair Value	374,304
Total debt securities, Amortized Cost	696,718
Total debt securities, Fair Value	685,006
Residential and Multi-Family Mortgage [Member]
Schedule of Available-for-sale Securities [Line Items]
Mortgage & asset backed securities, Amortized Cost	248,017
Mortgage & asset backed securities, Fair Value	242,607
Pooled SBA [Member]
Schedule of Available-for-sale Securities [Line Items]
Mortgage & asset backed securities, Amortized Cost	70,077
Mortgage & asset backed securities, Fair Value	67,721
Commercial Mortgage [Member]
Schedule of Available-for-sale Securities [Line Items]
Mortgage & asset backed securities, Amortized Cost	385
Mortgage & asset backed securities, Fair Value	$ 374

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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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