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Retirement Plans (Tables)

12 Months Ended

Dec. 31, 2024

Non-contributory defined benefit pension plan

Retirement Plans

Schedule of expenses incurred and charged against operations with regard to all of the company's retirement plans

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​	​	​	​	​	​	​	​	​	​	​
​	​	Year Ended December 31,
(Dollars in thousands)	​	2024		​	2023		​	2022
Employee savings plan/ 401(k)	​	$	17,178	​	$	16,528	​	$	15,357	​
Supplemental executive retirement plan	​		1,141	​		(3,252)	​		(1,510)	​
Split dollar plan	​	​	(210)	​	​	(753)	​	​	(105)	​
Post-retirement benefits	​		13	​		312	​		(108)	​
​	​	$	18,122	​	$	12,835	​	$	13,634	​

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Tabular disclosure of the costs related to the various types of retirement plans including defined benefit pension plan cost, defined contribution plan cost, other postretirement benefit plan cost, and net periodic benefit cost.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-SubTopic 20
-Topic 715
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480506/715-20-50-1

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