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Commitments and Contingencies - Litigation Narrative (Details) | Feb. 04, 2019 | Nov. 11, 2019 | Aug. 12, 2019
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Loss Contingencies [Line Items] |  |  |
Threshold period for not filing response to complaint | 30 days |  |
Jackson Vs Zaderej |  |  |
Loss Contingencies [Line Items] |  |  |
Minimum number of candidate elected to board |  |  | 6
Novitzki Vs Zaderej |  |  |
Loss Contingencies [Line Items] |  |  |
Minimum number of candidate elected to board |  | 3 |

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