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v3.19.3

Disclosures About Fair Value of Assets and Liabilities - Transfers Between Levels (Details) - USD ($) | 3 Months Ended | 9 Months Ended
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Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2019 | Sep. 30, 2018
Fair Value Disclosures [Abstract] |  |  |  |
Transfers in or out of Level 3 | $ 0 | $ 0 | $ 0 | $ 0

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

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- Definition Amount of transfer of financial instrument classified as an asset into (out of) level 3 of the fair value hierarchy. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
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Period Type: | duration