Premises and Equipment (Lease Commitments, Components of Lease Expense) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Property, Plant and Equipment [Line Items]
Amortization of lease right-of-use assets	$ 32,811	$ 32,772
Short-term lease expense	1,595	1,799
Non-lease components (including taxes, insurance, common maintenance, etc.)	11,203	11,396
Total operating lease expense, excluding rent	$ 45,609	$ 45,967