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Goodwill and Other Intangible Assets - Textuals (Details) - USD ($)
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract]      
Goodwill impairment loss $ 0 $ 0 $ 0
Accumulated goodwill impairment $ 0