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Derivatives included in AOCI (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Derivative Instruments and Hedging Activities Disclosure [Abstract]      
Unrealized Gain (Loss) on Interest Rate Cash Flow Hedges, Pretax, Accumulated Other Comprehensive Income (Loss) $ (244) $ (454) $ 0
Interest Rate Cash Flow Hedge Gain (Loss) Reclassified to Earnings, Net 0 0 0
Gain (Loss) on Cash Flow Hedge Ineffectiveness, Net $ 0 $ 0 $ 0