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Debt Securities, Continuous Unrealized Loss Position (Details)
$ in Thousands
12 Months Ended
Dec. 31, 2021
USD ($)
Continuous unrealized loss position of securities [Abstract]  
Impairment loss realized in comprehensive income $ 0
Securities in continuous unrealized loss position, fair value [Abstract]  
Less than twelve months 6,047
Twelve months or longer 0
Fair value 6,047
Securities in continuous unrealized loss position, unrealized losses [Abstract]  
Less than twelve months (5)
Twelve months or longer 0
Unrealized losses (5)
U.S. Treasury [Member]  
Securities in continuous unrealized loss position, fair value [Abstract]  
Less than twelve months 6,047
Twelve months or longer 0
Fair value 6,047
Securities in continuous unrealized loss position, unrealized losses [Abstract]  
Less than twelve months (5)
Twelve months or longer 0
Unrealized losses $ (5)