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