Loans and the Allowance for Loan Losses (Details 9) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2013	Dec. 31, 2012
Changes in accretable yield of loans acquired with deteriorated credit quality
Beginning Balance	$ (7,848)	$ (10,543)
Additions through acquisition	(37,555)	0
Reclasses from nonaccretable difference	(7,568)	(15,170)
Accretion	13,021	17,865
Ending Balance	(39,950)	(7,848)
Impaired Covered Loans
Changes in accretable yield of loans acquired with deteriorated credit quality
Beginning Balance	(13)	(40)
Additions through acquisition	0	0
Reclasses from nonaccretable difference	(115)	(1,055)
Accretion	127	1,082
Ending Balance	(1)	(13)
Other Covered Loans
Changes in accretable yield of loans acquired with deteriorated credit quality
Beginning Balance	(6,705)	(9,757)
Additions through acquisition	0	0
Reclasses from nonaccretable difference	(6,741)	(12,178)
Accretion	9,688	15,230
Ending Balance	(3,758)	(6,705)
Not Covered Loans
Changes in accretable yield of loans acquired with deteriorated credit quality
Beginning Balance	(1,130)	(746)
Additions through acquisition	(37,555)	0
Reclasses from nonaccretable difference	(712)	(1,937)
Accretion	3,206	1,553
Ending Balance	$ (36,191)	$ (1,130)

The aggregate excess of a loan's cash flows expected to be collected over the investor's initial investment in the loan. This relates to loans accounted for as available-for-sale debt securities, with evidence of deterioration of credit quality since origination that were acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 30

-Section 15

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=27045933&loc=d3e13503-111538

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (a)(2)

-URI http://asc.fasb.org/extlink&oid=6379141&loc=d3e15032-111544

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- Definition

Current period recognition of the accretion of the excess of a loan's cash flows expected to be collected over the investor's initial investment in the loan. This element relates to loans accounted for as available-for-sale debt securities, with evidence of deterioration of credit quality since origination that were acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable.

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- Definition

Increases in the aggregate excess of a loan's cash flows expected to be collected over the investor's initial investment in the loan. This relates to loans accounted for as available-for-sale debt securities, with evidence of deterioration of credit quality since origination that were acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable.

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- Definition

Change in the estimate of cash flows expected to be collected, which results in an increase in accretable yield. This relates to a loan accounted for as an available-for-sale debt security, with evidence of deterioration of credit quality since origination that was acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable.

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