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Bank segment - Credit risk profile - summary (Details) - USD ($) $ in Thousands | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2015 | Dec. 31, 2014
Credit risk profile based on nonaccrual loans |  |
Nonaccrual loans | $ 31,136 | $ 36,886
Accruing loans 90 days or more past due | 0 | 0
Financing Receivable, Modifications, Post-Modification Recorded Investment | 22,756 | 24,107
Residential 1-4 family |  |
Credit risk profile based on nonaccrual loans |  |
Nonaccrual loans | 18,172 | 19,253
Financing Receivable, Modifications, Post-Modification Recorded Investment | 14,257 | 13,525
Commercial real estate |  |
Credit risk profile based on nonaccrual loans |  |
Nonaccrual loans | 522 | 5,112
Financing Receivable, Modifications, Post-Modification Recorded Investment | 0 | 0
Home equity line of credit |  |
Credit risk profile based on nonaccrual loans |  |
Nonaccrual loans | 1,962 | 1,087
Financing Receivable, Modifications, Post-Modification Recorded Investment | 1,362 | 480
Residential land |  |
Credit risk profile based on nonaccrual loans |  |
Nonaccrual loans | $ 712 | 720
Accruing loans 90 days or more past due |  |
Financing Receivable, Modifications, Post-Modification Recorded Investment | $ 5,822 | 7,130
Commercial construction |  |
Credit risk profile based on nonaccrual loans |  |
Nonaccrual loans | 0 | 0
Financing Receivable, Modifications, Post-Modification Recorded Investment | 0 | 0
Residential construction |  |
Credit risk profile based on nonaccrual loans |  |
Nonaccrual loans | 0 | 0
Financing Receivable, Modifications, Post-Modification Recorded Investment | 0 | 0
Commercial loans |  |
Credit risk profile based on nonaccrual loans |  |
Nonaccrual loans | 9,225 | 10,053
Accruing loans 90 days or more past due |  | 0
Financing Receivable, Modifications, Post-Modification Recorded Investment | 1,315 | 2,972
Consumer loans |  |
Credit risk profile based on nonaccrual loans |  |
Nonaccrual loans | 543 | 661
Accruing loans 90 days or more past due |  | 0
Financing Receivable, Modifications, Post-Modification Recorded Investment | $ 0 | $ 0

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- Definition Recorded investment in financing receivables that are 90 days or more past due and still accruing. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=35738203&loc=d3e5111-111524 + Details
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