Employee Benefit Plans (Narrative) (Details) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023 USD ($) shares	Jun. 30, 2022 USD ($) shares	Jun. 30, 2023 USD ($) plan $ / shares shares	Jun. 30, 2022 USD ($) shares
Defined Benefit Plan Disclosure [Line Items]
Contribution to the Plan	$ 443	$ 453	$ 909	$ 847
Number of stock option plans | plan			1
Deferred tax benefit from stock options exercised		8	$ 65	84
Options, exercises in period, intrinsic value		$ 50	$ 242	$ 555
Exercise of options | shares	0	3,850	15,705	31,400
Employee Stock Option [Member]
Defined Benefit Plan Disclosure [Line Items]
Share-based compensation expense	$ 0	$ 0	$ 0	$ 0
Options, outstanding, intrinsic value	130,000		130,000
Proceeds from options exercised			165
Stock Appreciation Rights (SARs) [Member]
Defined Benefit Plan Disclosure [Line Items]
Share-based compensation income	(28)	(17)	$ (123)	(43)
Exercise of options | shares			4,000
Restricted Stock [Member]
Defined Benefit Plan Disclosure [Line Items]
Share-based compensation expense	366	$ 398	$ 904	$ 710
Unrecognized compensation cost	$ 2,200		$ 2,200
Unrecognized compensation costs, period for recognition			2 years 2 months 4 days
Grant-date fair value			$ 516
Vested (in shares) | shares			20,770
Nonvested, beginning of period (in shares) | shares			129,836
Nonvested, beginning balance (in dollars per share) | $ / shares			$ 19.61
2015 Stock Incentive Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Rights issued (in shares) | shares			11,840
Rights available for grant (in shares) | shares	1,676,663		1,676,663
Cornerstone Non-Qualified Plan Options [Member]
Defined Benefit Plan Disclosure [Line Items]
Rights issued (in shares) | shares			4,500
401 (k) Matching Range One [Member] | Deferred Salary Reduction Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Employer matching contribution, percent of match			100.00%
Employer matching contribution, percent of employees gross pay			3.00%
401 (k) Matching Range Two [Member] | Deferred Salary Reduction Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Employer matching contribution, percent of match			50.00%
Employer matching contribution, percent of employees gross pay			2.00%