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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) (USD $) In Thousands, except Share data, unless otherwise specified | 3 Months Ended | 12 Months Ended | 36 Months Ended
--- | --- | --- | ---
Mar. 31, 2010 | Dec. 31, 2012 branchlocations | Dec. 31, 2011 | Dec. 31, 2010 | Dec. 31, 2012 entities branchlocations
Number of branches (branches) |  | 414 |  |  | 414
Maximum period of fair value refinement after transaction closing date |  | 1 year | 1 year |  |
Minimum sustained performance for non-accrual status loans to accrue interest |  |  | 6 years |  |
Number of entities assets were acquired and liabilities were assumed |  |  |  |  | 6
Impaired loans and leases, baseline for meaurement |  | $ 500 | $ 1,000 |  | $ 500
Impaired loans and leases, baseline for meaurement, classified as TDRs |  | 100 |  |  | 100
Securities sold under repurchase agreements |  | 111,907 | 172,275 |  | 111,907
Average shares outstanding (in shares) |  | 10,244,472 | 10,376,445 | 10,434,453 |
Loans sold |  | 581,911 | 509,647 | 583,750 |
Allowance for loan and lease losses, period increase (decrease) |  | (94,011) | (189,898) | (88,717) |
Adoption of change in accounting for QSPE | $ (304) | $ 0 | $ 0 | $ (304) |
Common Class A [Member] |  |  |  |  |
Votes per share of common stock |  | 1 |  |  |
Common Class B [Member] |  |  |  |  |
Votes per share of common stock |  | 16 |  |  |
Building [Member] | Minimum [Member] |  |  |  |  |
Useful life |  | 25 years |  |  |
Building [Member] | Maximum [Member] |  |  |  |  |
Useful life |  | 40 years |  |  |
Furniture and Fixtures [Member] | Minimum [Member] |  |  |  |  |
Useful life |  | 3 years |  |  |
Furniture and Fixtures [Member] | Maximum [Member] |  |  |  |  |
Useful life |  | 10 years |  |  |
Software [Member] | Minimum [Member] |  |  |  |  |
Useful life |  |  | 3 years |  |
Software [Member] | Maximum [Member] |  |  |  |  |
Useful life |  |  | 10 years |  |
Equipment [Member] | Minimum [Member] |  |  |  |  |
Useful life |  |  | 3 years |  |
Equipment [Member] | Maximum [Member] |  |  |  |  |
Useful life |  |  | 10 years |  |

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- Definition Reflects the sum for the period of the additions and reductions to the loan loss reserve, which when added to the opening balance of the reserve will agree to the ending balance in the reserve. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 114 -Paragraph 20 -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 Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.7(d)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=7512638&loc=d3e5212-111524 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 7 -Subparagraph d -Article 9 + Details
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- Definition The carrying value as of the balance sheet date of securities that an institution sells and agrees to repurchase (the identical or substantially the same securities) as a seller-borrower at a specified date for a specified price, also known as a repurchase agreement, or repo. Most repos involve obligations of the federal government or its agencies, but other financial instruments, such as commercial paper, banker's acceptances, and negotiable certificates of deposit, are sometimes used in repos. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 140 -Paragraph 100 -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 Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(m)(1)(a)(i)) -URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.13(1)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Audit and Accounting Guide (AAG) -Number AAG-BRD -Paragraph 36 -IssueDate 2006-05-01 -Chapter 4 -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 SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 13 -Subparagraph 1 -Article 9 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=7472769&loc=d3e9760-107771 + Details
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- Definition Amount of other increase (decrease) of servicing assets amortized for changes other than additions, disposals, amortization, application of any valuation allowance, and other than temporary impairments (OTTI). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 50 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=7882072&loc=d3e122739-111746 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 140 -Paragraph 17 -Subparagraph e -Subclause g -Clause 1 -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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