Income Taxes (Narrative) (Details) - TRS Leasing, Inc [Member] - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Income Tax Disclosure [Line Items]
Deferred income tax expense (benefit)	$ 0	$ 0
Net operating loss carryforward for federal income tax purposes	$ 18,295
Minimum [Member]
Income Tax Disclosure [Line Items]
Loss carryforwards expiration period	Dec. 31, 2022
Maximum [Member]
Income Tax Disclosure [Line Items]
Loss carryforwards expiration period	Dec. 31, 2035