Income Taxes (Schedule Of Deferred Tax Assets And Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Income Taxes [Abstract]
Loss carryforwards	$ 7,911	$ 7,030
Finance and operating leases	6,880	7,497
Excess interest carryforward	2,660	4,544
Stock compensation	2,034	2,153
Accrued expenses	2,002	1,890
Property	1,397	1,147
Deferred compensation	1,326	1,107
Credit carryforwards	1,214	710
Inventory and deferred preservation costs write-downs	308	299
UNICAP	97	425
Tax benefit of tax reserves	54	52
Other	2,647	1,659
Less valuation allowance	(7,170)	(3,218)
Total deferred tax assets, net	21,360	25,295
Intangible assets	(35,770)	(35,555)
Finance and operating leases	(6,617)	(7,048)
Unrealized gains and losses	(4,929)
Financing arrangements	(4,700)
Debt costs	(1,528)	(1,917)
Prepaid items	(417)	(494)
Property		(28)
Other	(665)	(616)
Total deferred tax liabilities	(54,626)	(45,658)
Total net deferred tax liabilities	$ (33,266)	$ (20,363)