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Allowance for Loan Losses - Allowance for Loan Losses (Details) - USD ($) $ in Thousands |  | 3 Months Ended
--- | --- | ---
Jan. 01, 2020 | Mar. 31, 2020 | Mar. 31, 2019
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |
Balance, beginning of period | $ 17,667 | $ 17,667 | $ 17,820
Initial PCD Allowance | 2,800 | 2,786 |
Provision for credit losses on loans |  | 8,600 | 364
Charge-offs |  | (713) | (661)
Recoveries |  | 309 | 298
Balance, end of period | 22,577 | 48,440 | 17,821
Impact of adopting ASC 326 |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |
Balance, beginning of period | 19,791 | 19,791 |
Balance, end of period | 17,667 |  |
Mortgage warehouse |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |
Balance, beginning of period | 1,077 | 1,077 | 1,006
Initial PCD Allowance |  | 0 |
Provision for credit losses on loans |  | (22) | 8
Charge-offs |  | 0 | 0
Recoveries |  | 0 | 0
Balance, end of period | 0 | 1,055 | 1,014
Mortgage warehouse | Impact of adopting ASC 326 |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |
Balance, beginning of period | 0 | 0 |
Balance, end of period | 1,077 |  |
Commercial |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |
Balance, beginning of period | 11,996 | 11,996 | 10,495
Initial PCD Allowance |  | 2,786 |
Provision for credit losses on loans |  | 6,916 | 1,122
Charge-offs |  | (69) | (77)
Recoveries |  | 89 | 16
Balance, end of period |  | 32,550 | 11,556
Commercial | Impact of adopting ASC 326 |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |
Balance, beginning of period | 10,832 | 10,832 |
Real estate |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |
Balance, beginning of period | 923 | 923 | 1,676
Initial PCD Allowance |  | 0 |
Provision for credit losses on loans |  | 700 | (115)
Charge-offs |  | (26) | 0
Recoveries |  | 9 | 27
Balance, end of period |  | 5,654 | 1,588
Real estate | Impact of adopting ASC 326 |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |
Balance, beginning of period | 4,048 | 4,048 |
Consumer |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |
Balance, beginning of period | 3,671 | 3,671 | 4,643
Initial PCD Allowance |  | 0 |
Provision for credit losses on loans |  | 1,006 | (651)
Charge-offs |  | (618) | (584)
Recoveries |  | 211 | 255
Balance, end of period |  | 9,181 | $ 3,663
Consumer | Impact of adopting ASC 326 |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |
Balance, beginning of period | $ 4,911 | $ 4,911 |

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- Definition Amount of increase in allowance for credit loss on financing receivable purchased with credit deterioration. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=119407570&loc=SL82919249-210447 + Details
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- Definition Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953423-111524 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=118955202&loc=SL82895884-210446 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=119407570&loc=SL82919249-210447 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -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 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=119407570&loc=SL82919249-210447 + Details
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- Definition Amount of recovery of financing receivables doubtful of collection that were previously charged off. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 55 -Paragraph 79 -URI http://asc.fasb.org/extlink&oid=118955255&loc=SL82922352-210448 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -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 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=119407570&loc=SL82919249-210447 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(4) -URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953423-111524 + Details
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- Definition Amount of writeoff of financing receivable, charged against allowance for credit loss. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=119407570&loc=SL82919249-210447 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(3) -URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953423-111524 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 55 -Paragraph 79 -URI http://asc.fasb.org/extlink&oid=118955255&loc=SL82922352-210448 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -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 + Details
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