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Bank segment - Loan modifications (Details) - Troubled debt restructurings real estate loans $ in Thousands | 3 Months Ended
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Mar. 31, 2015 USD ($) contract | Mar. 31, 2014 USD ($) contract
Loan modifications determined to be troubled debt restructurings |  |
Number of contracts | contract | 15 | 15
Pre-modification outstanding recorded investment | $ 1,398 | $ 2,527
Post-modification outstanding recorded investment | 1,416 | 2,541
Net increases in ALL | $ 102 | $ 233
Residential 1-4 family |  |
Loan modifications determined to be troubled debt restructurings |  |
Number of contracts | contract | 5 | 5
Pre-modification outstanding recorded investment | $ 877 | $ 921
Post-modification outstanding recorded investment | 895 | 935
Net increases in ALL | $ 47 | $ 44
Home equity line of credit |  |
Loan modifications determined to be troubled debt restructurings |  |
Number of contracts | contract | 9 | 0
Pre-modification outstanding recorded investment | $ 429 | $ 0
Post-modification outstanding recorded investment | 429 | 0
Net increases in ALL | $ 55 | $ 0
Residential land |  |
Loan modifications determined to be troubled debt restructurings |  |
Number of contracts | contract | 0 | 7
Pre-modification outstanding recorded investment | $ 0 | $ 1,133
Post-modification outstanding recorded investment | 0 | 1,133
Net increases in ALL | $ 0 | $ 175
Commercial loans |  |
Loan modifications determined to be troubled debt restructurings |  |
Number of contracts | contract | 1 | 3
Pre-modification outstanding recorded investment | $ 92 | $ 473
Post-modification outstanding recorded investment | 92 | 473
Net increases in ALL | $ 0 | $ 14

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- Definition The amount of the outstanding recorded investment in financial receivables prior to the financial receivables being modified as troubled debt restructurings. + References No definition available. + Details
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- Definition Amount of increase (decrease) of allowance reserve for credit loss. + References Reference 1: 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 2: 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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