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ESTIMATED FAIR VALUES (Assets and Liabilities Measured with Significant Unobservable Inputs) (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Dec. 31, 2012 | Dec. 31, 2011
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Beginning balance | $ 198,998 | $ 165,590
Acquired in FDIC-assisted transactions |  | 36,303
Additions | 140,645 | 176,892
Sales | (157,999) | 152,307
Writedowns | (35,554) | 27,480
Ending balance | 146,090 | 198,998
Covered OREO [Member] |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Beginning balance | 148,599 | 112,748
Acquired in FDIC-assisted transactions |  | 36,303
Additions | 105,059 | 138,280
Sales | (124,435) | 118,738
Writedowns | (26,646) | 19,994
Ending balance | 102,577 | 148,599
Non-covered OREO [Member] |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Beginning balance | 50,399 | 52,842
Acquired in FDIC-assisted transactions |  | 0
Additions | 35,586 | 38,612
Sales | (33,564) | 33,569
Writedowns | (8,908) | 7,486
Ending balance | $ 43,513 | $ 50,399

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- Definition Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Acquired + References No definition available. + Details
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Balance Type: | debit
Period Type: | duration

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- Definition Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Write Downs + References No definition available. + Details
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- Details
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Data Type: | xbrli:stringItemType
Balance Type: | na
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- Definition Purchases that have taken place during the period in relation to assets measured at fair value and categorized within Level 3 of the fair value hierarchy. + 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)(2) -URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258 + Details
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Balance Type: | debit
Period Type: | duration

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- Definition Sales that have taken place during the period in relation to assets measured at fair value and categorized within Level 3 of the fair value hierarchy. + 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)(2) -URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258 + 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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