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Summary of Significant Accounting Policies - Additional Information (Details) - USD ($) $ in Thousands | Jan. 01, 2020 | Dec. 31, 2019 | Mar. 31, 2020
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New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |
Remaining purchase discount on loans |  | $ 50,958 |
Interest receivable |  |  | $ 32,998
Cumulative Effect, Period Of Adoption, Adjustment |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |
Remaining purchase discount on loans | $ (5,469) |  |

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- Definition Amount of discount (premium) attributable to other factors 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 19 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=119407570&loc=SL82919265-210447 + Details
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