Fair Value of Financial Instruments (Narrative) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2020 USD ($) security	Dec. 31, 2019 USD ($)
Fair Value of Financial Instruments [Abstract]
Acquired trust preferred securities, number of securities | security	9
Trust preferred securities, amortized cost	$ 18,500
Trust preferred securities, fair value	13,300
Fair value, assets, level 1 to level 2 transfers, amount	$ 0	$ 0