Income Tax Considerations (Schedule Of Deferred Tax Assets And Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Deferred tax assets:
Impairment loss	$ 13,538	$ 13,900
Allowance on other assets	100	91
Interest expense	11,707	12,701
Net operating loss carryforward	10,071	11,024
Straight-line rentals	337	0
Book-tax basis differential	3,777	1,693
Other	421	412
Total deferred tax assets	39,951	39,821
Valuation allowance	(27,230)	(27,539)
Total deferred tax assets, net of allowance	12,721	12,282
Deferred tax liabilities:
Straight-line rentals	0	48
Book-tax basis differential	7,205	7,402
Other	333	387
Total deferred tax liabilities	7,538	$ 7,837
Net operating loss carryforwards	$ 28,700