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Investment Securities - Fair Value Measurements (Details) | 6 Months Ended | 12 Months Ended
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Jun. 30, 2021 | Dec. 31, 2020
Investments, Debt and Equity Securities [Abstract] |  |
Percentage of investments recorded at fair value | 75.00% | 73.00%

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- References No definition available. + Details
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- Definition Represents the percentage of the total investment portfolio recorded at fair value based upon quoted market prices or other observable inputs. + References No definition available. + Details
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