Pension And Other Liabilities (Summary Of Other Liabilities Including Pension) (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023	Aug. 29, 2014
Other Liabilities [Abstract]
Lease liability		$ 5,900
Accrued pension	$ 575	500
Security deposit payable	165	117
Finance lease liabilities		43
Other	34	33
Other current liabilities	774	6,593
Accrued pension	1,747	2,312		$ 7,500
Lease make-good provision	6,284	5,908	$ 6,050
Deferred rent liability	3,439	3,786
Environmental reserve	1,656	1,656
Other non-current liabilities	$ 13,126	$ 13,662