Retirement Plans - Schedule Of Net Benefit Costs (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
United States
Defined Benefit Plan Disclosure
Interest cost	$ 49	$ 43	$ 146	$ 129
Expected return on plan assets	(66)	(62)	(198)	(185)
Recognized net actuarial loss	18	25	53	74
Net periodic pension cost	1	6	1	18
United Kingdom
Defined Benefit Plan Disclosure
Interest cost	42	28	126	84
Expected return on plan assets	(74)	(65)	(222)	(195)
Amortization of prior service costs and transition amount	6	7	18	21
Recognized net actuarial loss	38	83	114	249
Net periodic pension cost	$ 12	$ 53	$ 36	$ 159