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Subsequent Events (Details) - Subsequent Event - Walker | Apr. 01, 2019 USD ($)
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Subsequent Events |
Purchase price paid in cash | $ 178,000,000
Promissory note payable | 25,000,000
Number of equal installments | 2
Installment amount on third and fourth anniversaries | 12,500,000
Purchase price advance | $ 20,500,000

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