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Investment Securities (Unrealized Gains) (Details) (USD $) In Thousands, unless otherwise specified | Jun. 30, 2012 | Dec. 31, 2011
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Schedule of Investments [Line Items] |  |
Investment Securities Available-for-Sale: Amortized cost | $ 462,700 | $ 417,939
Investment Securities Available-for-Sale: Unrealized Gains | 9,561 | 6,714
Investment Securities Available-for-Sale: Unrealized Losses | (5,071) | (10,146)
Investment Securities Available-for-Sale: Fair Value | 467,190 | 414,507
Investment Securities Held-to-Maturity: Amortized Cost | 62,997 | 72,233
Investment Securities Held-to-Maturity: Unrealized Gains | 3,596 | 2,792
Investment Securities Held-to-Maturity: Unrealized Losses | (31) | (103)
Investment Securities Held-to-Maturity: Fair Value | 66,562 | 74,922
Federal agency obligations [Member] |  |
Schedule of Investments [Line Items] |  |
Investment Securities Available-for-Sale: Amortized cost | 18,301 | 24,781
Investment Securities Available-for-Sale: Unrealized Gains | 382 | 188
Investment Securities Available-for-Sale: Fair Value | 18,683 | 24,969
Investment Securities Held-to-Maturity: Amortized Cost | 17,532 | 28,262
Investment Securities Held-to-Maturity: Unrealized Gains | 103 | 177
Investment Securities Held-to-Maturity: Unrealized Losses | (22) | (34)
Investment Securities Held-to-Maturity: Fair Value | 17,613 | 28,405
Residential mortgage-backed securities [Member] |  |
Schedule of Investments [Line Items] |  |
Investment Securities Available-for-Sale: Amortized cost | 86,792 | 113,213
Investment Securities Available-for-Sale: Unrealized Gains | 2,002 | 2,157
Investment Securities Available-for-Sale: Unrealized Losses |  | (6)
Investment Securities Available-for-Sale: Fair Value | 88,794 | 115,364
Commercial mortgage-backed securities [Member] |  |
Schedule of Investments [Line Items] |  |
Investment Securities Available-for-Sale: Amortized cost | 9,742 |
Investment Securities Available-for-Sale: Unrealized Gains | 74 |
Investment Securities Available-for-Sale: Unrealized Losses | (17) |
Investment Securities Available-for-Sale: Fair Value | 9,799 |
Investment Securities Held-to-Maturity: Amortized Cost | 6,182 | 6,276
Investment Securities Held-to-Maturity: Unrealized Gains | 93 |
Investment Securities Held-to-Maturity: Unrealized Losses | (8) | (69)
Investment Securities Held-to-Maturity: Fair Value | 6,267 | 6,207
Obligations of U.S. states and political subdivisions [Member] |  |
Schedule of Investments [Line Items] |  |
Investment Securities Available-for-Sale: Amortized cost | 81,898 | 66,309
Investment Securities Available-for-Sale: Unrealized Gains | 3,449 | 2,900
Investment Securities Available-for-Sale: Unrealized Losses | (203) | (36)
Investment Securities Available-for-Sale: Fair Value | 85,144 | 69,173
Investment Securities Held-to-Maturity: Amortized Cost | 39,283 | 37,695
Investment Securities Held-to-Maturity: Unrealized Gains | 3,400 | 2,615
Investment Securities Held-to-Maturity: Unrealized Losses | (1) |
Investment Securities Held-to-Maturity: Fair Value | 42,682 | 40,310
Trust preferred securities [Member] |  |
Schedule of Investments [Line Items] |  |
Investment Securities Available-for-Sale: Amortized cost | 20,610 | 20,567
Investment Securities Available-for-Sale: Unrealized Gains | 42 | 14
Investment Securities Available-for-Sale: Unrealized Losses | (1,827) | (4,394)
Investment Securities Available-for-Sale: Fair Value | 18,825 | 16,187
Corporate bonds and notes [Member] |  |
Schedule of Investments [Line Items] |  |
Investment Securities Available-for-Sale: Amortized cost | 210,859 | 175,812
Investment Securities Available-for-Sale: Unrealized Gains | 3,432 | 1,382
Investment Securities Available-for-Sale: Unrealized Losses | (1,587) | (4,077)
Investment Securities Available-for-Sale: Fair Value | 212,704 | 173,117
Collateralized mortgage obligations [Member] |  |
Schedule of Investments [Line Items] |  |
Investment Securities Available-for-Sale: Amortized cost | 2,854 | 3,226
Investment Securities Available-for-Sale: Unrealized Losses | (1,102) | (1,327)
Investment Securities Available-for-Sale: Fair Value | 1,752 | 1,899
Asset-backed securities [Member] |  |
Schedule of Investments [Line Items] |  |
Investment Securities Available-for-Sale: Amortized cost | 19,643 | 7,614
Investment Securities Available-for-Sale: Unrealized Gains | 117 | 52
Investment Securities Available-for-Sale: Unrealized Losses | (127) | (13)
Investment Securities Available-for-Sale: Fair Value | 19,633 | 7,653
Equity securities [Member] |  |
Schedule of Investments [Line Items] |  |
Investment Securities Available-for-Sale: Amortized cost | 772 | 535
Investment Securities Available-for-Sale: Unrealized Gains | 16 | 21
Investment Securities Available-for-Sale: Unrealized Losses | (187) | (273)
Investment Securities Available-for-Sale: Fair Value | 601 | 262
Other securities [Member] |  |
Schedule of Investments [Line Items] |  |
Investment Securities Available-for-Sale: Amortized cost | 11,229 | 5,882
Investment Securities Available-for-Sale: Unrealized Gains | 47 | 21
Investment Securities Available-for-Sale: Unrealized Losses | (21) | (20)
Investment Securities Available-for-Sale: Fair Value | $ 11,255 | $ 5,883

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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 FASB Staff Position (FSP) -Number FAS115-1/124-1 -Paragraph 15D -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 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 -Topic 320 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6871852&loc=d3e26610-111562 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 115 -Paragraph 16 -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 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Staff Position (FSP) -Number FAS115-1/124-1 -Paragraph 15C -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 6: 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 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Staff Position (FSP) -Number FAS115-1/124-1 -Paragraph 15E -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 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 115 -Paragraph 13 -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 9: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 115 -Paragraph 14 -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 10: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 22 -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. + Details
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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 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Staff Position (FSP) -Number FAS115-1/124-1 -Paragraph 7 -Footnote 2 -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 Statement of Financial Accounting Standard (FAS) -Number 115 -Paragraph 19 -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. + Details
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- Definition The net amount of gross unrealized gains (losses) for securities, at a point in time, which are categorized neither as held-to-maturity nor trading securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=6872113&loc=d3e27357-111563 + Details
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- Definition Amount of investments in debt securities categorized as held-to-maturity valued at amortized cost, excludes other than temporary impairment (OTTI). + References No definition available. + Details
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- Definition 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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 115 -Paragraph 19 -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 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 115 -Paragraph 137 -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 -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6872113&loc=d3e27232-111563 + Details
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- Definition 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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 115 -Paragraph 19 -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 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 115 -Paragraph 137 -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 -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6872113&loc=d3e27232-111563 + Details
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