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Derivatives - Offsetting Assets and Liabilities (Details) - USD ($)
Dec. 31, 2020
Dec. 31, 2019
ASSETS    
Gross Amounts   $ 114,000
Gross Amounts Offset   0
Amounts Net of Offset   114,000
Financial Collateral   0
Net Amount   114,000
Derivative contracts - current    
ASSETS    
Gross Amounts   114,000
Gross Amounts Offset   0
Amounts Net of Offset   114,000
Financial Collateral   0
Net Amount $ 0 $ 114,000