Fair Value Accounting (Assets Measured at Fair Value on Non-Recurring Basis) (Details) - Fair Value, Measurements, Nonrecurring Basis - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	$ 29,201	$ 21,138
Other real estate	42	5,902
Other real estate	0	18,202
Other assets held for sale	1,170	1,634
Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	0	0
Other real estate	0	0
Other real estate	0	0
Other assets held for sale	0	0
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	0	0
Other real estate	0	0
Other real estate	0	0
Other assets held for sale	0	0
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	29,201	21,138
Other real estate	42	5,902
Other real estate	0	18,202
Other assets held for sale	$ 1,170	$ 1,634