Discontinued Operations - Results of discontinued operations (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net Income (Loss) from Operations			$ 171	$ (5,316)
Income Tax (Benefit) Expense on Disposition		$ (43)		4,493
Net (Loss) Gain on Disposition		(65)		6,932
Net Income (Loss)	$ 22	(317)	171	1,616
Disposal groups held for sale or disposed of by sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Operating Revenues				24,623
Operating Expenses	(36)	420	(285)	31,770
Goodwill Impairment Charge				1,000
Operating Income (Loss)	36	(420)	285	(8,147)
Other Deductions				(42)
Income Tax Expense (Benefit)	14	(168)	114	(2,873)
Net Income (Loss) from Operations	22	(252)	171	(5,316)
(Loss) Gain on Disposition Before Taxes		(108)		11,425
Income Tax (Benefit) Expense on Disposition		(43)		4,493
Net (Loss) Gain on Disposition		(65)		6,932
Net Income (Loss)	$ 22	$ (317)	$ 171	$ 1,616