Fair Value of Financial Instruments, Part 1 (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Securities available-for sale [Abstract]
Total securities available for sale	$ 741,292	$ 863,754
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Securities available-for sale [Abstract]
Total securities available for sale	10	10
Significant Other Observable Inputs (Level 2) [Member]
Securities available-for sale [Abstract]
Total securities available for sale	741,282	863,744
Significant Unobservable Inputs (Level 3) [Member]
Securities available-for sale [Abstract]
Total securities available for sale	0	0
Recurring [Member] \| Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Securities available-for sale [Abstract]
U.S. government-sponsored enterprises	0	0
State and political subdivisions	0	0
Mortgage-backed securities and collateralized mortgage obligations - residential	0	0
Corporate bonds	0	0
Small Business Administration-guaranteed participation securities	0	0
Mortgage-backed securities and collateralized mortgage obligations - commercial	0	0
Other securities and equity securities	10	10
Total securities available for sale	10	10
Recurring [Member] \| Significant Other Observable Inputs (Level 2) [Member]
Securities available-for sale [Abstract]
U.S. government-sponsored enterprises	92,708	198,829
State and political subdivisions	4,968	7,758
Mortgage-backed securities and collateralized mortgage obligations - residential	524,197	532,449
Corporate bonds	6,402	10,471
Small Business Administration-guaranteed participation securities	101,821	103,029
Mortgage-backed securities and collateralized mortgage obligations - commercial	10,543	10,558
Other securities and equity securities	643	650
Total securities available for sale	741,282	863,744
Recurring [Member] \| Significant Unobservable Inputs (Level 3) [Member]
Securities available-for sale [Abstract]
U.S. government-sponsored enterprises	0	0
State and political subdivisions	0	0
Mortgage-backed securities and collateralized mortgage obligations - residential	0	0
Corporate bonds	0	0
Small Business Administration-guaranteed participation securities	0	0
Mortgage-backed securities and collateralized mortgage obligations - commercial	0	0
Other securities and equity securities	0	0
Total securities available for sale	0	0
Recurring [Member] \| Carrying Value [Member]
Securities available-for sale [Abstract]
U.S. government-sponsored enterprises	92,708	198,829
State and political subdivisions	4,968	7,758
Mortgage-backed securities and collateralized mortgage obligations - residential	524,197	532,449
Corporate bonds	6,402	10,471
Small Business Administration-guaranteed participation securities	101,821	103,029
Mortgage-backed securities and collateralized mortgage obligations - commercial	10,543	10,558
Other securities and equity securities	653	660
Total securities available for sale	$ 741,292	$ 863,754

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- Definition

This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents Available-for-sale Securities which consist of all investments in certain debt and equity securities neither classified as trading or held-to-maturity securities. A debt security represents a creditor relationship with an enterprise. Debt securities include, among other items, US Treasury securities, US government securities, municipal securities, corporate bonds, convertible debt, commercial paper, and all securitized debt instruments. An equity security represents an ownership interest in an enterprise or the right to acquire or dispose of an ownership interest in an enterprise at fixed or determinable prices. Equity securities include, among other things, common stock, certain preferred stock, warrant rights, call options, and put options, but do not include convertible debt. An entity may opt to provide the reader with additional narrative text to better understand the nature of investments in debt and equity securities which are categorized as Available-for-sale.

+ 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=7534914&loc=d3e22054-111558

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 115

-Paragraph 12

-Subparagraph b

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Available-for-Sale Securities

-URI http://asc.fasb.org/extlink&oid=6505594

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