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Disclosures About Fair Value of Assets and Liabilities (Details 2) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2011 | Jun. 30, 2011 | Mar. 31, 2011 | Sep. 30, 2012
Hedged loans [Member] |  |  |  |
Reconciliation of the beginning and ending balances of recurring fair value measurements recognized in the accompanying condensed consolidated balance sheet using significant unobservable (Level 3) inputs |  |  |  |
Beginning balance | $ 49,618 | $ 48,411 | $ 50,088 | $ 54,362
Included in net income | 393 | 351 | (410) | (74)
Purchases, issuances, and settlements | 1,797 | 1,200 | (352) | 6,114
Principal payments | (628) | (344) | (915) | (491)
Transfers out to Level 2 |  |  |  | (59,911)
Ending balance | 51,180 | 49,618 | 48,411 |
Forward sale commitments [Member] |  |  |  |
Reconciliation of the beginning and ending balances of recurring fair value measurements recognized in the accompanying condensed consolidated balance sheet using significant unobservable (Level 3) inputs |  |  |  |
Beginning balance | 455 | 281 | 407 | 662
Included in net income | 294 | 174 | (126) | (152)
Transfers out to Level 2 |  |  |  | (510)
Ending balance | 749 | 455 | 281 |
Interest Rate Swap [Member] |  |  |  |
Reconciliation of the beginning and ending balances of recurring fair value measurements recognized in the accompanying condensed consolidated balance sheet using significant unobservable (Level 3) inputs |  |  |  |
Beginning balance | (3,846) | (2,554) | (3,415) | (7,101)
Included in net income | (393) | (351) | 410 | 74
Included in other comprehensive income, gross | (3,001) | (941) | 451 | 563
Transfers out to Level 2 |  |  |  | 6,464
Ending balance | (7,240) | (3,846) | (2,554) |
Commitment to originate loan [Member] |  |  |  |
Reconciliation of the beginning and ending balances of recurring fair value measurements recognized in the accompanying condensed consolidated balance sheet using significant unobservable (Level 3) inputs |  |  |  |
Beginning balance | (64) | (56) |  |
Included in net income | 64 | (8) | (56) | (71)
Transfers out to Level 2 |  |  |  | 71
Ending balance |  | $ (64) | $ (56) |

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- Definition Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Principal. + References No definition available. + Details
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- Definition Amount of gain (loss) recognized in earnings, arising from assets measured at fair value on a recurring basis using unobservable inputs (level 3). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258 + Details
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- Definition Amount of gain (loss) recognized in other comprehensive income, arising from assets measured at fair value on a recurring basis using unobservable inputs (level 3). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1a) -URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258 + Details
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- Definition Amount of purchases, sales, issues, and settlements (net) which have taken place in relation to assets measured at fair value on a recurring basis using unobservable inputs (level 3). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 157 -Paragraph 32 -Subparagraph c(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. + Details
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- Definition This element represents [net] transfers in to and out of assets measured at fair value on a recurring basis using unobservable inputs (Level 3) which have taken place during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 157 -Paragraph 32 -Subparagraph c(3) -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 element represents an asset measured at fair value using significant unobservable inputs (Level 3) which is required for reconciliation purposes of beginning and ending balances. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 157 -Paragraph 32 -Subparagraph c -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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