Investment Securities (Schedule of gross unrealized losses and fair value, securities in continuous unrealized loss position) (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Debt Securities, Available-for-sale [Line Items]
Less Than 12 Months Fair Value	$ 229,717	$ 211,005
Less Than 12 Months Unrealized Losses	(13,566)	(3,539)
12 Months or Longer Fair Value	40,425	16,799
12 Months or Longer Unrealized Losses	(3,809)	(493)
Fair Value	270,142	227,804
Unrealized Losses	(17,375)	(4,032)
U.S. Treasury securities
Debt Securities, Available-for-sale [Line Items]
Less Than 12 Months Fair Value	44,138	49,007
Less Than 12 Months Unrealized Losses	(1,001)	(268)
12 Months or Longer Fair Value	9,330	5,797
12 Months or Longer Unrealized Losses	(764)	(182)
Fair Value	53,468	54,804
Unrealized Losses	(1,765)	(450)
U.S. government agency mortgage-backed securities-residential
Debt Securities, Available-for-sale [Line Items]
Less Than 12 Months Fair Value	151,239	139,019
Less Than 12 Months Unrealized Losses	(11,075)	(3,035)
12 Months or Longer Fair Value	28,282	11,002
12 Months or Longer Unrealized Losses	(2,878)	(311)
Fair Value	179,521	150,021
Unrealized Losses	(13,953)	(3,346)
U.S. government agency securities
Debt Securities, Available-for-sale [Line Items]
Less Than 12 Months Fair Value	22,744	14,625
Less Than 12 Months Unrealized Losses	(1,051)	(131)
12 Months or Longer Fair Value	929
12 Months or Longer Unrealized Losses	(70)
Fair Value	23,673	14,625
Unrealized Losses	(1,121)	(131)
Municipal securities
Debt Securities, Available-for-sale [Line Items]
Less Than 12 Months Fair Value	3,380	2,469
Less Than 12 Months Unrealized Losses	(104)	(40)
12 Months or Longer Fair Value	1,491
12 Months or Longer Unrealized Losses	(90)
Fair Value	4,871	2,469
Unrealized Losses	(194)	(40)
Corporate Bonds
Debt Securities, Available-for-sale [Line Items]
Less Than 12 Months Fair Value	8,216	5,885
Less Than 12 Months Unrealized Losses	(335)	(65)
12 Months or Longer Fair Value	393
12 Months or Longer Unrealized Losses	(7)
Fair Value	8,609	5,885
Unrealized Losses	$ (342)	$ (65)

Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for more than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for less than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

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