Loans, Analysis of Allowance for Credit Losses (Details) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended		12 Months Ended
	Sep. 30, 2021	Jun. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Allowance for Credit Losses [Abstract]
Period of reasonable and supportable forecast				12 months
Provision for credit losses	$ (163)	$ (4,300)	$ 2,433	$ (6,919)	$ 15,091	$ 16,047
Allowance for credit losses to nonperforming loans	220.00%	197.20%	160.70%	220.00%	160.70%
Credit loss reserve as percentage of total loans outstanding	1.21%	1.21%	1.35%	1.21%	1.35%
Credit loss reserve as percentage of total loans outstanding excluding PPP loans	1.25%	1.27%	1.46%	1.25%	1.46%
Consumer [Member] | Consumer Indirect [Member]
Allowance for Credit Losses [Abstract]
Provision for credit losses	$ 357		$ 253	$ (3,024)	$ 3,258	$ 4,079