Short-term Borrowings (Summary of Various Sources of Short-Term Borrowed Funds) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Short-term Debt [Line Items]
Balance at year end	$ 125,617
Federal Funds Purchased [Member]
Short-term Debt [Line Items]
Maximum month-end balance		$ 37,573
Average daily balance during the year		$ 3,739
Weighted average rate during the year		2.97%
FHLB Short-Term Borrowings [Member]
Short-term Debt [Line Items]
Maximum month-end balance		$ 54,667
Average daily balance during the year		$ 12,819
Weighted average rate during the year		2.80%
FRB PPPLF Borrowings [Member]
Short-term Debt [Line Items]
Balance at year end	$ 125,617
Weighted average rate at year end	0.35%
Maximum month-end balance	$ 203,937
Average daily balance during the year	$ 106,233
Weighted average rate during the year	0.35%