Subsequent Events (Narrative) (Details) $ in Thousands, shares in Millions	Jan. 01, 2022 USD ($) banking_office shares	Dec. 31, 2021 USD ($) banking_office	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)
Subsequent Event [Line Items]
Number of banking offices | banking_office		63
Assets		$ 5,608,539	$ 4,977,577	$ 4,397,672
Loans, Net		2,967,247	3,041,213
Deposits		$ 4,744,316	$ 4,106,530
Subsequent Event | CUB
Subsequent Event [Line Items]
Cash paid	$ 50,805
Subsequent Event | CUB | Common Stock
Subsequent Event [Line Items]
Shares of common stock issued for acquisition (in shares) | shares	2.9
Subsequent Event | CUB
Subsequent Event [Line Items]
Number of banking offices | banking_office	15
Assets	$ 1,108,546
Loans, Net	683,807
Deposits	$ 930,533