Employee Benefit Plans (Narrative) (Details) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2023 USD ($) plan $ / shares shares	Mar. 31, 2022 USD ($) shares
Defined Benefit Plan Disclosure [Line Items]
Contribution to the Plan	$ 466	$ 393
Number of stock option plans | plan	1
Deferred tax benefit from stock options exercised	$ 65	$ 76
Exercise of options | shares	15,705	27,550
Stock Options [Member]
Defined Benefit Plan Disclosure [Line Items]
Share-based compensation expense	$ 0	$ 0
Options, exercises in period, intrinsic value	242	506
Options, outstanding, intrinsic value	157,000
Proceeds from options exercised	165
Stock Appreciation Rights (SARs) [Member]
Defined Benefit Plan Disclosure [Line Items]
Share-based compensation income	$ (95)	(26)
Exercise of options | shares	2,000
Restricted Stock [Member]
Defined Benefit Plan Disclosure [Line Items]
Share-based compensation expense	$ 538	$ 312
Unrecognized compensation cost	$ 2,500
Unrecognized compensation costs, period for recognition	2 years 4 months 6 days
Grant-date fair value	$ 359
Vested (in shares) | shares	13,913
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
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%