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Fair Value of Financial Instruments and Derivative Instruments Valuation of Company's Financial Instruments (Details) - Fair Value, Inputs, Level 2 - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Derivative instruments – asset position $ 0 $ 0
Derivative instruments – liability position $ 121 $ 0