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Bank subsidiary (Details 7) (USD $) In Thousands, unless otherwise specified | 12 Months Ended |
--- | --- | ---
Dec. 31, 2011 | Dec. 31, 2010 | Dec. 31, 2008
Allowance for loan losses: |  |  |
Valuation allowance, balance at the beginning of the period | $ 40,646 | $ 41,679 | $ 35,798
Charge-offs | (19,490) | (24,815) |
Recoveries | 1,741 | 2,888 |
Provision | 15,009 | 20,894 |
Valuation allowance, balance at the end of the period | 37,906 | 40,646 | 35,798
Ending balance: individually evaluated for impairment | 3,704 | 3,460 |
Ending balance: collectively evaluated for impairment | 34,202 | 37,186 |
Financing Receivables: |  |  |
Ending balance | 3,694,535 | 3,546,056 |
Ending balance: individually evaluated for impairment | 128,488 | 116,191 |
Ending balance: collectively evaluated for impairment | 3,566,047 | 3,429,865 |
Residential 1-4 family |  |  |
Allowance for loan losses: |  |  |
Valuation allowance, balance at the beginning of the period | 6,497 | 5,522 |
Charge-offs | (5,528) | (6,142) |
Recoveries | 110 | 744 |
Provision | 5,421 | 6,373 |
Valuation allowance, balance at the end of the period | 6,500 | 6,497 |
Ending balance: individually evaluated for impairment | 203 | 230 |
Ending balance: collectively evaluated for impairment | 6,297 | 6,267 |
Financing Receivables: |  |  |
Ending balance | 1,926,774 | 2,087,813 |
Ending balance: individually evaluated for impairment | 26,012 | 34,615 |
Ending balance: collectively evaluated for impairment | 1,900,762 | 2,053,198 |
Commercial real estate |  |  |
Allowance for loan losses: |  |  |
Valuation allowance, balance at the beginning of the period | 1,474 | 861 |
Provision | 214 | 613 |
Valuation allowance, balance at the end of the period | 1,688 | 1,474 |
Ending balance: collectively evaluated for impairment | 1,688 | 1,474 |
Financing Receivables: |  |  |
Ending balance | 331,931 | 300,689 |
Ending balance: individually evaluated for impairment | 13,397 | 12,156 |
Ending balance: collectively evaluated for impairment | 318,534 | 288,533 |
Home equity line of credit |  |  |
Allowance for loan losses: |  |  |
Valuation allowance, balance at the beginning of the period | 4,269 | 4,679 |
Charge-offs | (1,439) | (2,517) |
Recoveries | 25 | 63 |
Provision | 1,499 | 2,044 |
Valuation allowance, balance at the end of the period | 4,354 | 4,269 |
Ending balance: collectively evaluated for impairment | 4,354 | 4,269 |
Financing Receivables: |  |  |
Ending balance | 535,481 | 416,453 |
Ending balance: individually evaluated for impairment | 1,450 | 827 |
Ending balance: collectively evaluated for impairment | 534,031 | 415,626 |
Residential land |  |  |
Allowance for loan losses: |  |  |
Valuation allowance, balance at the beginning of the period | 6,411 | 4,252 |
Charge-offs | (4,071) | (6,487) |
Recoveries | 170 | 63 |
Provision | 1,285 | 8,583 |
Valuation allowance, balance at the end of the period | 3,795 | 6,411 |
Ending balance: individually evaluated for impairment | 2,525 | 1,642 |
Ending balance: collectively evaluated for impairment | 1,270 | 4,769 |
Financing Receivables: |  |  |
Ending balance | 45,392 | 65,599 |
Ending balance: individually evaluated for impairment | 39,364 | 39,631 |
Ending balance: collectively evaluated for impairment | 6,028 | 25,968 |
Commercial construction |  |  |
Allowance for loan losses: |  |  |
Valuation allowance, balance at the beginning of the period | 1,714 | 3,068 |
Provision | 174 | (1,354) |
Valuation allowance, balance at the end of the period | 1,888 | 1,714 |
Ending balance: collectively evaluated for impairment | 1,888 | 1,714 |
Financing Receivables: |  |  |
Ending balance | 41,950 | 38,079 |
Ending balance: collectively evaluated for impairment | 41,950 | 38,079 |
Residential construction |  |  |
Allowance for loan losses: |  |  |
Valuation allowance, balance at the beginning of the period | 7 | 19 |
Provision | (3) | (12) |
Valuation allowance, balance at the end of the period | 4 | 7 |
Ending balance: collectively evaluated for impairment | 4 | 7 |
Financing Receivables: |  |  |
Ending balance | 3,327 | 5,602 |
Ending balance: collectively evaluated for impairment | 3,327 | 5,602 |
Commercial loans |  |  |
Allowance for loan losses: |  |  |
Valuation allowance, balance at the beginning of the period | 16,015 | 19,498 |
Charge-offs | (5,335) | (6,261) |
Recoveries | 869 | 1,537 |
Provision | 3,318 | 1,241 |
Valuation allowance, balance at the end of the period | 14,867 | 16,015 |
Ending balance: individually evaluated for impairment | 976 | 1,588 |
Ending balance: collectively evaluated for impairment | 13,891 | 14,427 |
Financing Receivables: |  |  |
Ending balance | 716,427 | 551,683 |
Ending balance: individually evaluated for impairment | 48,241 | 28,886 |
Ending balance: collectively evaluated for impairment | 668,186 | 522,797 |
Consumer loans |  |  |
Allowance for loan losses: |  |  |
Valuation allowance, balance at the beginning of the period | 3,325 | 2,590 |
Charge-offs | (3,117) | (3,408) |
Recoveries | 567 | 481 |
Provision | 3,031 | 3,662 |
Valuation allowance, balance at the end of the period | 3,806 | 3,325 |
Ending balance: collectively evaluated for impairment | 3,806 | 3,325 |
Financing Receivables: |  |  |
Ending balance | 93,253 | 80,138 |
Ending balance: individually evaluated for impairment | 24 | 76 |
Ending balance: collectively evaluated for impairment | 93,229 | 80,062 |
Unallocated |  |  |
Allowance for loan losses: |  |  |
Valuation allowance, balance at the beginning of the period | 934 | 1,190 |
Provision | 70 | (256) |
Valuation allowance, balance at the end of the period | 1,004 | 934 |
Ending balance: collectively evaluated for impairment | $ 1,004 | $ 934 |

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- Definition The amount of the recorded investment in a contractual right to receive money on demand or on fixed or determinable dates that is recognized as an asset in the creditor's statement of financial position. Examples include, but are not limited to, accounts receivable (with terms exceeding one year), notes receivable and receivables relating to lessor's rights to payments from leases other than operating leases that have been recorded as assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Receivable -URI http://asc.fasb.org/extlink&oid=6953735 + Details
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- Definition A valuation allowance for financing receivables that are expected to be uncollectible. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -URI http://asc.fasb.org/extlink&oid=6965416&loc=SL6953423-111524 -Subparagraph (c)(1) + Details
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- Definition The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -URI http://asc.fasb.org/extlink&oid=6965416&loc=SL6953423-111524 -Subparagraph (g) + Details
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- Definition The valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -URI http://asc.fasb.org/extlink&oid=6965416&loc=SL6953423-111524 -Subparagraph (g) + Details
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- Definition Reduction to the allowance for credit losses related to collections on financing receivables which have been partially or fully charged off as bad debts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -URI http://asc.fasb.org/extlink&oid=6965416&loc=SL6953423-111524 -Subparagraph (c)(4) + Details
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- Definition Reduction to the allowance for credit losses related to financing receivables deemed uncollectible. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -URI http://asc.fasb.org/extlink&oid=6965416&loc=SL6953423-111524 -Subparagraph (c)(3) + Details
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- Definition The balance of financing receivables that were collectively evaluated for impairment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -URI http://asc.fasb.org/extlink&oid=6965416&loc=SL6953423-111524 -Subparagraph (h) + Details
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