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v3.21.1

Commitments and Contingencies - Allowance for Credit Losses for Unfunded Loan Commitments (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2021 | Mar. 31, 2020 | Dec. 31, 2019
Off-Balance Sheet, Credit Loss, Liability [Roll Forward] |  |  |
Balance at beginning of period | $ 4,467 | $ 3,112 |
(Recovery) provision for credit losses | (164) | 1,616 |
Balance at end of period | 4,303 | 6,077 | $ 3,112
Accounting Standards Update [Extensible List] |  |  | us-gaap:AccountingStandardsUpdate201613Member
Impact of new accounting standard |  |  |
Off-Balance Sheet, Credit Loss, Liability [Roll Forward] |  |  |
Balance at beginning of period | 0 | 1,349 |
Balance at end of period |  |  | $ 1,349
Balance after adoption of ASU 2016-13 |  |  |
Off-Balance Sheet, Credit Loss, Liability [Roll Forward] |  |  |
Balance at beginning of period | $ 4,467 | $ 4,461 |
Balance at end of period |  |  | $ 4,461

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