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v3.19.3.a.u2

Summary of Significant Accounting Policies (Investment Securities) (Details) | 12 Months Ended
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Dec. 31, 2019 | Dec. 31, 2018
Accounting Policies [Abstract] |  |
Percentage of investments recorded at fair value | 71.00% | 87.00%

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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
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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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