Investment Securities (Schedule of gross unrealized losses and fair value, securities in continuous unrealized loss position) (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Debt Securities, Available-for-sale [Line Items]
Less Than 12 Months Fair Value	$ 5,725	$ 40,946
Less Than 12 Months Unrealized Losses	(586)	(4,211)
12 Months or Longer Fair Value	215,502	181,268
12 Months or Longer Unrealized Losses	(32,460)	(31,646)
Fair Value	221,227	222,214
Unrealized Losses	(33,046)	(35,857)
U.S. Treasury securities
Debt Securities, Available-for-sale [Line Items]
12 Months or Longer Fair Value	38,309	37,857
12 Months or Longer Unrealized Losses	(1,839)	(2,315)
Fair Value	38,309	37,857
Unrealized Losses	(1,839)	(2,315)
U.S. government agency mortgage-backed securities-residential
Debt Securities, Available-for-sale [Line Items]
Less Than 12 Months Fair Value	503	23,384
Less Than 12 Months Unrealized Losses	(28)	(2,711)
12 Months or Longer Fair Value	142,026	121,151
12 Months or Longer Unrealized Losses	(27,105)	(26,681)
Fair Value	142,529	144,535
Unrealized Losses	(27,133)	(29,392)
U.S. government agency securities
Debt Securities, Available-for-sale [Line Items]
Less Than 12 Months Fair Value		9,160
Less Than 12 Months Unrealized Losses		(869)
12 Months or Longer Fair Value	22,773	13,289
12 Months or Longer Unrealized Losses	(2,010)	(1,467)
Fair Value	22,773	22,449
Unrealized Losses	(2,010)	(2,336)
Municipal securities
Debt Securities, Available-for-sale [Line Items]
Less Than 12 Months Fair Value	1,529	1,529
Less Than 12 Months Unrealized Losses	(1)	(4)
12 Months or Longer Fair Value	3,180	3,127
12 Months or Longer Unrealized Losses	(270)	(327)
Fair Value	4,709	4,656
Unrealized Losses	(271)	(331)
Corporate Bonds
Debt Securities, Available-for-sale [Line Items]
Less Than 12 Months Fair Value	3,693	6,873
Less Than 12 Months Unrealized Losses	(557)	(627)
12 Months or Longer Fair Value	9,214	5,844
12 Months or Longer Unrealized Losses	(1,236)	(856)
Fair Value	12,907	12,717
Unrealized Losses	$ (1,793)	$ (1,483)