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Investments (Unrealized Gain (Loss) on Investments) (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2014 | Dec. 31, 2013
Schedule of Investments [Line Items] |  |
Amortized Cost | $ 383,748 | $ 368,319
Gross Unrealized Gains | 2,721 | 2,119
Gross Unrealized Losses | 25,004 | 33,849
Investment securities - available-for-sale (at fair value) | 361,465 | 336,589
OTTI in AOCI | 8,314 | 12,703
Held-to-maturity Amortized cost | 2,860 | 3,900
Investment securities - HTM | 2,444 | 3,590
US Treasury Securities [Member] |  |
Schedule of Investments [Line Items] |  |
Amortized Cost | 23,500 |
Gross Unrealized Gains | 0 |
Gross Unrealized Losses | 0 |
Investment securities - available-for-sale (at fair value) | 23,500 |
OTTI in AOCI | 0 |
US government agencies [Member] |  |
Schedule of Investments [Line Items] |  |
Amortized Cost | 89,761 | 97,242
Gross Unrealized Gains | 84 | 14
Gross Unrealized Losses | 3,880 | 5,221
Investment securities - available-for-sale (at fair value) | 85,965 | 92,035
OTTI in AOCI | 0 | 0
Residential mortgage-backed agencies [Member] |  |
Schedule of Investments [Line Items] |  |
Amortized Cost | 113,815 | 116,933
Gross Unrealized Gains | 347 | 334
Gross Unrealized Losses | 3,710 | 4,823
Investment securities - available-for-sale (at fair value) | 110,452 | 112,444
OTTI in AOCI | 0 | 0
Commercial mortgage-backed agencies [Member] |  |
Schedule of Investments [Line Items] |  |
Amortized Cost | 39,296 | 31,025
Gross Unrealized Gains | 63 | 14
Gross Unrealized Losses | 1,021 | 1,134
Investment securities - available-for-sale (at fair value) | 38,338 | 29,905
OTTI in AOCI | 0 | 0
Collateralized mortgage obligations [Member] |  |
Schedule of Investments [Line Items] |  |
Amortized Cost | 29,498 | 30,468
Gross Unrealized Gains | 75 | 84
Gross Unrealized Losses | 573 | 1,162
Investment securities - available-for-sale (at fair value) | 29,000 | 29,390
OTTI in AOCI | 0 | 0
Obligations of states and political subdivisions [Member] |  |
Schedule of Investments [Line Items] |  |
Amortized Cost | 50,629 | 55,505
Gross Unrealized Gains | 1,177 | 895
Gross Unrealized Losses | 689 | 1,123
Investment securities - available-for-sale (at fair value) | 51,117 | 55,277
OTTI in AOCI | 0 | 0
Held-to-maturity Amortized cost | 2,860 | 3,900
Held-to-maturity gross Unrealized Gains | 0 | 249
Held-to-maturity Gross Unrealized Losses | 416 | 559
Investment securities - HTM | 2,444 | 3,590
Held-to-maturity OTTI in AOCI | 0 | 0
Collateralized debt obligations [Member] |  |
Schedule of Investments [Line Items] |  |
Amortized Cost | 37,249 | 37,146
Gross Unrealized Gains | 975 | 778
Gross Unrealized Losses | 15,131 | 20,386
Investment securities - available-for-sale (at fair value) | 23,093 | 17,538
OTTI in AOCI | $ 8,314 | $ 12,703

X
- Definition Accumulated other comprehensive loss related to portion of other than temporary impairment (OTTI) due to factors other than credit losses on debt securities categorized as available-for-sale that an entity does not intend to sell and which it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis of the debt security. The amount represented by this item is net of tax, as applicable. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=28358780&loc=SL7669686-108580 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (aaa) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27161-111563 + Details
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- Definition Accumulated other comprehensive loss related to portion of other than temporary impairment (OTTI) due to factors other than credit losses on debt securities categorized as held-to-maturity that an entity does not intend to sell and which it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis of the debt security. The amount represented by this item is net of tax, as applicable. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=28358780&loc=SL7669686-108580 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (dd) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27232-111563 + Details
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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 + 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 + Details
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- Definition Amount of unrealized gain before deducting unrealized loss on investments in debt and equity securities classified as available-for-sale securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27161-111563 + Details
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- Definition Amount of unrealized loss before deducting unrealized gain on investments in available-for-sale securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27161-111563 + Details
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- Definition Fair value of investments in debt securities classified as held-to-maturity. + References Reference 1: 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 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (f) -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 50 -Paragraph 5 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27232-111563 + Details
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