Securities (Summary of Volume of State and Political Subdivision Securities Held in Portfolio) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	$ 398,643	$ 277,157
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	6,223	10,715
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	3,763	1,745
Debt Securities, Available-for-sale	401,103	$ 286,127
CALIFORNIA
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	48,491
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	772
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	752
Debt Securities, Available-for-sale	48,511
TEXAS
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	23,343
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	437
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	379
Debt Securities, Available-for-sale	23,401
PENNSYLVANIA
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	14,144
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	553
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	51
Debt Securities, Available-for-sale	14,646
OREGON
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	14,756
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	0
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	242
Debt Securities, Available-for-sale	14,514
WASHINGTON
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	12,801
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	286
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	87
Debt Securities, Available-for-sale	$ 13,000

Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount, before tax, of unrealized loss in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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