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Accounting Pronouncements Adoption of Accounting Pronouncements (Details) - USD ($)
$ in Thousands
Mar. 31, 2020
Dec. 31, 2019
Mar. 31, 2019
Dec. 31, 2018
Accounting Standards Update 2016-13 [Member] | Retained Earnings [Member]        
New Accounting Pronouncements or Change in Accounting Principle [Line Items]        
Cumulative effect of new accounting principle in period of adoption $ 0 $ 1,435 $ 0 $ 0