Income Taxes (Deferred Tax Assets and Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Deferred tax assets:
Employee benefit accruals	$ 7,471	$ 7,828
Impairment of investments	12,342	12,337
Impact of timing of settlement payments	9,054	10,854
Various U.S. federal and state tax loss carryforwards	1,828	2,378
Operating lease liabilities	2,328	3,277
Current expected credit losses	4,111	4,111
Other	3,000	3,910
Deferred tax assets	40,134	44,695
Less: Valuation allowance	(550)	(348)
Net deferred tax assets	39,584	44,347
Deferred tax liabilities:
Basis differences on non-consolidated entities	(39,884)	(24,441)
Basis differences on fixed and intangible assets	(34,794)	(35,154)
Basis differences on inventory	(11,165)	(10,808)
Basis differences on long-term investments	(2,777)	(4,383)
Basis differences on available for sale securities	0	(1,490)
Operating lease right of use assets	(1,998)	(2,839)
Deferred tax liabilities	(90,618)	(79,115)
Net deferred tax liabilities	$ (51,034)	$ (34,768)