Income Taxes (Narrative) (Details) - TRS Leasing, Inc [Member] $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2017 USD ($)	Sep. 30, 2017 USD ($)
Income Tax Disclosure [Line Items]
Alternative minimum tax expense	$ 15	$ 50
Net operating loss carryforward for federal income tax purposes	$ 1,307	$ 1,307
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