Investment Securities (Details 2) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Investment securities available for sale
Amortized Cost	$ 795,803	$ 520,826
Gross Unrealized Gains	7,015	14,240
Gross Unrealized Losses	(16,027)	(183)
Fair Value	786,791	534,883
Government-sponsored entities debt
Investment securities available for sale
Amortized Cost	149,708	87,584
Gross Unrealized Gains	185	965
Gross Unrealized Losses	(6,899)	(31)
Fair Value	142,994	88,518
State and municipal obligations
Investment securities available for sale
Amortized Cost	142,934	147,201
Gross Unrealized Gains	1,798	5,647
Gross Unrealized Losses	(4,081)	(49)
Fair Value	140,651	152,799
Residential government-sponsored entities mortgage-backed securities
Investment securities available for sale
Amortized Cost	500,000	285,800
Gross Unrealized Gains	4,394	7,489
Gross Unrealized Losses	(4,915)	(102)
Fair Value	499,479	293,187
Corporate stocks
Investment securities available for sale
Amortized Cost	3,161	241
Gross Unrealized Gains	638	139
Gross Unrealized Losses	(132)	(1)
Fair Value	$ 3,667	$ 379

Amount before tax of unrealized gain in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale.

No definition available.

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- Definition

Amount before tax of unrealized loss in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale.

+ References

No definition available.

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- Definition

Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 25

-Paragraph 1

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=28360136&loc=d3e22054-111558

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 50

-Paragraph 5

-Subparagraph (aa)

-URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27232-111563

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 45

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6871852&loc=d3e26610-111562

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- Definition

This item represents the cost of debt and equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.2)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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