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Debt (Purchase Money Promissory Note) (Narrative) (Details) - USD ($)
$ in Millions
3 Months Ended 12 Months Ended
Sep. 18, 2019
Mar. 31, 2020
Dec. 31, 2019
Debt Instrument [Line Items]      
Payment to repurchase shares $ 5.5    
Purchase Money Promissory Note [Member]      
Debt Instrument [Line Items]      
Maturity date Sep. 18, 2024 Sep. 18, 2024 Sep. 18, 2024
Interest rate 5.00%    
Shares repurchased plan, shares 407,000    
Payment to repurchase shares $ 3.5