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Bank segment - Allowance for loan losses (Details) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2018 | Mar. 31, 2017 | Dec. 31, 2017
Allowance for loan losses: |  |  |
Valuation allowance, balance at the beginning of the period | $ 53,637 | $ 55,533 |
Charge-offs | (4,873) | (4,340) |
Recoveries | 1,590 | 897 |
Provision | 3,541 | 3,907 |
Valuation allowance, balance at the end of the period | 53,895 | 55,997 |
Ending balance: individually evaluated for impairment | 2,706 |  | $ 2,730
Ending balance: collectively evaluated for impairment | 51,189 |  | 50,907
Financing Receivables: |  |  |
Total financing receivables | 4,742,680 |  | 4,671,577
Ending balance: individually evaluated for impairment | 34,631 |  | 33,393
Ending balance: collectively evaluated for impairment | 4,708,049 |  | 4,638,184
Residential 1-4 family |  |  |
Allowance for loan losses: |  |  |
Valuation allowance, balance at the beginning of the period | 2,902 | 2,873 |
Charge-offs | (31) | (6) |
Recoveries | 54 | 9 |
Provision | (400) | (95) |
Valuation allowance, balance at the end of the period | 2,525 | 2,781 |
Ending balance: individually evaluated for impairment | 1,207 |  | 1,248
Ending balance: collectively evaluated for impairment | 1,318 |  | 1,654
Financing Receivables: |  |  |
Total financing receivables | 2,116,121 |  | 2,118,047
Ending balance: individually evaluated for impairment | 17,728 |  | 18,284
Ending balance: collectively evaluated for impairment | 2,098,393 |  | 2,099,763
Commercial real estate |  |  |
Allowance for loan losses: |  |  |
Valuation allowance, balance at the beginning of the period | 15,796 | 16,004 |
Charge-offs | 0 | 0 |
Recoveries | 0 | 0 |
Provision | 163 | 500 |
Valuation allowance, balance at the end of the period | 15,959 | 16,504 |
Ending balance: individually evaluated for impairment | 68 |  | 65
Ending balance: collectively evaluated for impairment | 15,891 |  | 15,731
Financing Receivables: |  |  |
Total financing receivables | 766,522 |  | 733,106
Ending balance: individually evaluated for impairment | 1,004 |  | 1,016
Ending balance: collectively evaluated for impairment | 765,518 |  | 732,090
Home equity line of credit |  |  |
Allowance for loan losses: |  |  |
Valuation allowance, balance at the beginning of the period | 7,522 | 5,039 |
Charge-offs | 0 | (14) |
Recoveries | 14 | 91 |
Provision | 446 | 301 |
Valuation allowance, balance at the end of the period | 7,982 | 5,417 |
Ending balance: individually evaluated for impairment | 892 |  | 647
Ending balance: collectively evaluated for impairment | 7,090 |  | 6,875
Financing Receivables: |  |  |
Total financing receivables | 914,941 |  | 913,052
Ending balance: individually evaluated for impairment | 10,265 |  | 8,188
Ending balance: collectively evaluated for impairment | 904,676 |  | 904,864
Residential land |  |  |
Allowance for loan losses: |  |  |
Valuation allowance, balance at the beginning of the period | 896 | 1,738 |
Charge-offs | (8) | 0 |
Recoveries | 5 | 203 |
Provision | (219) | (462) |
Valuation allowance, balance at the end of the period | 674 | 1,479 |
Ending balance: individually evaluated for impairment | 17 |  | 47
Ending balance: collectively evaluated for impairment | 657 |  | 849
Financing Receivables: |  |  |
Total financing receivables | 16,569 |  | 15,797
Ending balance: individually evaluated for impairment | 1,184 |  | 1,265
Ending balance: collectively evaluated for impairment | 15,385 |  | 14,532
Commercial construction |  |  |
Allowance for loan losses: |  |  |
Valuation allowance, balance at the beginning of the period | 4,671 | 6,449 |
Charge-offs | 0 | 0 |
Recoveries | 0 | 0 |
Provision | (310) | 808 |
Valuation allowance, balance at the end of the period | 4,361 | 7,257 |
Ending balance: individually evaluated for impairment | 0 |  | 0
Ending balance: collectively evaluated for impairment | 4,361 |  | 4,671
Financing Receivables: |  |  |
Total financing receivables | 114,535 |  | 108,273
Ending balance: individually evaluated for impairment | 0 |  | 0
Ending balance: collectively evaluated for impairment | 114,535 |  | 108,273
Residential construction |  |  |
Allowance for loan losses: |  |  |
Valuation allowance, balance at the beginning of the period | 12 | 12 |
Charge-offs | 0 | 0 |
Recoveries | 0 | 0 |
Provision | (8) | (1) |
Valuation allowance, balance at the end of the period | 4 | 11 |
Ending balance: individually evaluated for impairment | 0 |  | 0
Ending balance: collectively evaluated for impairment | 4 |  | 12
Financing Receivables: |  |  |
Total financing receivables | 15,363 |  | 14,910
Ending balance: individually evaluated for impairment | 0 |  | 0
Ending balance: collectively evaluated for impairment | 15,363 |  | 14,910
Commercial loans |  |  |
Allowance for loan losses: |  |  |
Valuation allowance, balance at the beginning of the period | 10,851 | 16,618 |
Charge-offs | (602) | (1,510) |
Recoveries | 1,170 | 297 |
Provision | (1,064) | (503) |
Valuation allowance, balance at the end of the period | 10,355 | 14,902 |
Ending balance: individually evaluated for impairment | 519 |  | 694
Ending balance: collectively evaluated for impairment | 9,836 |  | 10,157
Financing Receivables: |  |  |
Total financing receivables | 568,371 |  | 544,828
Ending balance: individually evaluated for impairment | 4,385 |  | 4,574
Ending balance: collectively evaluated for impairment | 563,986 |  | 540,254
Consumer loans |  |  |
Allowance for loan losses: |  |  |
Valuation allowance, balance at the beginning of the period | 10,987 | 6,800 |
Charge-offs | (4,232) | (2,810) |
Recoveries | 347 | 297 |
Provision | 4,933 | 3,359 |
Valuation allowance, balance at the end of the period | 12,035 | 7,646 |
Ending balance: individually evaluated for impairment | 3 |  | 29
Ending balance: collectively evaluated for impairment | 12,032 |  | 10,958
Financing Receivables: |  |  |
Total financing receivables | 230,258 |  | 223,564
Ending balance: individually evaluated for impairment | 65 |  | 66
Ending balance: collectively evaluated for impairment | 230,193 |  | 223,498
Unallocated |  |  |
Allowance for loan losses: |  |  |
Valuation allowance, balance at the beginning of the period | 0 | 0 |
Charge-offs | 0 | 0 |
Recoveries | 0 | 0 |
Provision | 0 | 0 |
Valuation allowance, balance at the end of the period | 0 | $ 0 |
Ending balance: collectively evaluated for impairment | $ 0 |  | $ 0

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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 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953423-111524 + 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 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953423-111524 + Details
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- Definition Amount of 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 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953423-111524 + Details
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