Discontinued Operations - Narrative (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended		9 Months Ended
	Jan. 31, 2014	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from possessory interest and personal property—discontinued operations				$ 0	$ 28,000
(Income) loss from discontinued operations		$ 163	$ 979	$ 233	(13,023)
Glacier Park
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from possessory interest and personal property—discontinued operations	$ 25,000
Gain on Possessory Interest, before Tax	21,500
Gain on Possessory Interest, Net of Tax, Attributable to Parent Only	12,600
Gain on Possessory Interest, Net of Tax, Attributable to Noncontrolling Interest	$ 2,800
(Income) loss from discontinued operations			$ 979		$ (13,295)