Employee Benefit Plans (Narrative) (Details) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2023 USD ($) plan $ / shares shares	Dec. 31, 2022 USD ($) shares	Dec. 31, 2021 USD ($)
Defined Benefit Plan Disclosure [Line Items]
Defined contribution plan, cost recognized	$ 1,800	$ 1,600	$ 1,300
Number of stock option plans | plan	1
Deferred tax benefit from stock options exercised	$ 55	$ 209	13
Shares vested (in shares) | shares	0	0
Employee Stock Option [Member]
Defined Benefit Plan Disclosure [Line Items]
Options, exercises in period, intrinsic value	$ 242	$ 806
Options, outstanding, intrinsic value	179
Options, exercisable, intrinsic value	179
Proceeds from options exercised	165
Stock Appreciation Rights (SARs) [Member]
Defined Benefit Plan Disclosure [Line Items]
Share-based compensation expense		$ 93	256
Share-based compensation income	$ (70)
Exercise of options | shares	16,000	19,000
Restricted Stock [Member]
Defined Benefit Plan Disclosure [Line Items]
Share-based compensation expense	$ 1,400	$ 1,300	$ 693
Unrecognized compensation cost	$ 1,500
Unrecognized compensation costs, period for recognition	1 year 9 months 3 days
Grant-date fair value	$ 735
Vested (in shares) | shares	33,058
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	1,674,663
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%