Securities (Narrative) (Details)	12 Months Ended
	Dec. 31, 2021 USD ($) security	Dec. 31, 2020 USD ($) security	Dec. 31, 2019 USD ($)
Unrealized loss
Number of available-for-sale debt securities in an unrealized loss position	431	104
OTTI credit loss recognized | $			$ 0
Provision for credit losses recognized | $	$ 0	$ 0
Collateralized loan obligations (“CLOs”)
Unrealized loss
Number of available-for-sale debt securities in an unrealized loss position		3
Mortgage backed securities issued by us government agencies and government sponsored enterprise
Unrealized loss
Number of available-for-sale debt securities in an unrealized loss position	180	46
U.S. government agency and U.S. government-sponsored enterprise debt securities
Unrealized loss
Number of available-for-sale debt securities in an unrealized loss position	50
U.S. Treasury securities
Unrealized loss
Number of available-for-sale debt securities in an unrealized loss position	21
Corporate debt securities
Unrealized loss
Number of available-for-sale debt securities in an unrealized loss position	30	17