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Loans and Allowance - Narrative (Details) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2019 | Mar. 31, 2018 | Dec. 31, 2018
Receivables [Abstract] |  |  |
Loans held for sale | $ 3,330 |  | $ 4,778
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Loans | 7,299,320 |  | 7,224,467
Residential |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Loans | $ 1,512,876 |  | 1,494,578
Percentage of troubled debt restructured loans | 100.00% | 91.00% |
Mortgage loans with formal foreclosure proceedings | $ 646 |  | 800
Loans acquired with deteriorated credit quality |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Loans | 15,568 |  | 15,784
Loans acquired with deteriorated credit quality | Commercial and consumer loan |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Loans | 1,520 |  | 1,541
Loans acquired with deteriorated credit quality | Residential |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Loans | $ 938 |  | $ 1,293

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- Definition The face amount of loans that will be sold to other entities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=82891408&loc=d3e4428-111522 + Details
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- Definition Recorded investment of consumer mortgage loan receivables secured by residential real estate properties for which formal foreclosure proceedings are in process. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 35 -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL49126937-111524 + Details
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