Income Taxes (Schedule Of Components Of Income Tax Expense (Benefit)) (Details) - USD ($) $ in Thousands	3 Months Ended				12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Dec. 31, 2016	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Line Items]
Total income tax expense (benefit)	$ (645)	$ 15	$ 35	$ 125	$ (595)	$ 125
TRS Leasing, Inc [Member]
Income Tax Disclosure [Line Items]
Current tax expense, Federal					33	90
Deferred tax expense, Federal					(615)
Current tax expense, State and local					12
Deferred tax expense, State and local					(45)
Total income tax expense (benefit)					$ (615)	$ 90