Investment Securities (Narrative) (Details) $ in Thousands	3 Months Ended	12 Months Ended
	Jun. 30, 2020 USD ($)	Dec. 31, 2021 USD ($) security	Dec. 31, 2020 USD ($) security
Proceeds from sale and maturity of marketable securities		$ 0	$ 13,000
Fair value adjustment recorded through earnings		$ 15,368	$ 15,730
Gain on sale of investments	$ 347
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions | security		35	7
Held-to-maturity, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions | security		114	4