Commitments and Contingencies Commitments and Contingencies (Details 1) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Other Commitments [Line Items]
Commitment To Contribute Capital to CRA Related Pool	$ 55,499	$ 40,698
Less Than One Year
Other Commitments [Line Items]
Commitment To Contribute Capital to CRA Related Pool	27,750
More Than Twelve (12) Months but Less Than Twenty-four (24) Months
Other Commitments [Line Items]
Commitment To Contribute Capital to CRA Related Pool	$ 27,749