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Loans, Changes in the Allowance for Loan Losses (Details) - USD ($) $ in Thousands | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2018 | Dec. 31, 2017
Change in the allowance for unfunded commitments |  |
Balance at beginning of period | $ 24,000 |
Balance at end of period | 26,000 | $ 24,000
Allowance for Unfunded Commitments: |  |
Change in the allowance for unfunded commitments |  |
Balance at beginning of period | 24,400 | 25,400
Provision for unfunded commitments | (500) | (1,000)
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Provision for Loan Losses | 2,436 | 0
Balance at end of period | $ 26,336 | $ 24,400

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- Definition Amount of expense related to loan loss not accounted for as debt securities, with evidence of deterioration of credit quality. + References No definition available. + Details
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
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- Definition Amount of expense related to credit loss from transactions other than loan and lease transactions. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3602-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04(11)) -URI http://asc.fasb.org/extlink&oid=114873765&loc=SL114874048-224260 + Details
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