Retirement Plans, Pension Plan Assets (Details) - Pension Plan [Member] - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Pension Plan Assets by Asset Category [Abstract]
Total assets at fair value	$ 21,270	$ 19,929	$ 32,982
Level 1 [Member]
Pension Plan Assets by Asset Category [Abstract]
Total assets at fair value	8,294	6,352
Level 2 [Member]
Pension Plan Assets by Asset Category [Abstract]
Total assets at fair value	12,976	13,577
Level 3 [Member]
Pension Plan Assets by Asset Category [Abstract]
Total assets at fair value	0	0
Domestic [Member]
Pension Plan Assets by Asset Category [Abstract]
Total assets at fair value	5,623	5,208
Domestic [Member] | Level 1 [Member]
Pension Plan Assets by Asset Category [Abstract]
Total assets at fair value	5,623	5,208
Domestic [Member] | Level 2 [Member]
Pension Plan Assets by Asset Category [Abstract]
Total assets at fair value	0	0
Domestic [Member] | Level 3 [Member]
Pension Plan Assets by Asset Category [Abstract]
Total assets at fair value	0	0
International [Member]
Pension Plan Assets by Asset Category [Abstract]
Total assets at fair value	47	55
International [Member] | Level 1 [Member]
Pension Plan Assets by Asset Category [Abstract]
Total assets at fair value	0	0
International [Member] | Level 2 [Member]
Pension Plan Assets by Asset Category [Abstract]
Total assets at fair value	47	55
International [Member] | Level 3 [Member]
Pension Plan Assets by Asset Category [Abstract]
Total assets at fair value	0	0
International Fixed Income Funds [Member]
Pension Plan Assets by Asset Category [Abstract]
Total assets at fair value	14,486	14,551
International Fixed Income Funds [Member] | Level 1 [Member]
Pension Plan Assets by Asset Category [Abstract]
Total assets at fair value	1,574	1,060
International Fixed Income Funds [Member] | Level 2 [Member]
Pension Plan Assets by Asset Category [Abstract]
Total assets at fair value	12,912	13,491
International Fixed Income Funds [Member] | Level 3 [Member]
Pension Plan Assets by Asset Category [Abstract]
Total assets at fair value	0	0
Other Investments [Member]
Pension Plan Assets by Asset Category [Abstract]
Total assets at fair value	1,114	115
Other Investments [Member] | Level 1 [Member]
Pension Plan Assets by Asset Category [Abstract]
Total assets at fair value	1,097	84
Other Investments [Member] | Level 2 [Member]
Pension Plan Assets by Asset Category [Abstract]
Total assets at fair value	17	31
Other Investments [Member] | Level 3 [Member]
Pension Plan Assets by Asset Category [Abstract]
Total assets at fair value	$ 0	$ 0