Income Taxes (Schedule Of Components Of Deferred Tax Assets And Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Income Taxes [Abstract]
Net operating loss carry forwards	$ 8,199	$ 8,579
Alternative minimum tax credit carry-forwards	1,117	939
Foreign Tax Credit	2,715
Compensation and employee benefits	3,906	4,146
Deferred revenue	2,266	2,500
Accrued expenses	6,916	6,017
Accrued taxes	2,086	2,440
Land and property	7,373	8,457
Other		106
Total Deferred Tax Assets	34,578	33,184
Intangibles	(1,256)	(1,087)
Cancellation of indebtedness		(481)
Other	(367)
Total Deferred Tax Liabilities	(1,623)	(1,568)
Net deferred tax assets before valuation allowance	32,955	31,616
Valuation allowance	(6,720)	(6,870)
Net deferred tax asset	$ 26,235	$ 24,746