Investment Securities, Held-to-maturity Securities (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Amortized cost and fair value of the held to maturity securities [Abstract]
Amortized Cost	$ 82,136	$ 86,215
Gross Unrecognized Gains	4,574	4,228
Gross Unrecognized Losses	41	138
Fair Value	86,669	90,305
Mortgage-backed securities and collateralized mortgage obligations-residential [Member]
Amortized cost and fair value of the held to maturity securities [Abstract]
Amortized Cost	72,188	76,270
Gross Unrecognized Gains	3,194	2,744
Gross Unrecognized Losses	41	138
Fair Value	75,341	78,876
Corporate bonds [Member]
Amortized cost and fair value of the held to maturity securities [Abstract]
Amortized Cost	9,948	9,945
Gross Unrecognized Gains	1,380	1,484
Gross Unrecognized Losses	0	0
Fair Value	$ 11,328	$ 11,429

This item represents the aggregate fair value of investments in debt securities as of the balance sheet date and which are categorized as held-to-maturity.

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As of the balance sheet date, the excess of fair value over carrying value (amortized cost) of a debt security categorized as held-to-maturity, exclusive of dividend or interest income recognized but not yet received and exclusive of any write-downs for other-than-temporary impairment. Such item represents the gross unrecognized holding gain.

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- Definition

As of the balance sheet date, the excess of carrying value (amortized cost) over fair value of a debt security categorized as held-to-maturity, exclusive of dividend or interest income recognized but not yet received and exclusive of any write-downs for other-than-temporary impairment. Such item represents the gross unrecognized holding loss.

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