Discontinued Operations - Narrative (Details) - USD ($) $ in Thousands	1 Months Ended		12 Months Ended
	Sep. 30, 2014	Jan. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Income (loss) from discontinued operations			$ (394)	$ 14,389	$ 2,366
Proceeds from possessory interest and personal property - discontinued operations			0	28,000	0
Proceeds from Sale of Property, Plant, and Equipment			1,542	1,109	464
Gain (Loss) on Disposition of Property Plant Equipment			690	958	265
Goodwill, Impairment Loss					2,097
Other Asset Impairment Charges			$ 96	884	952
Amount of Adjustment to Prior Period Gain (Loss) on Disposal				1,100	1,100
Glacier Park
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Income (loss) from discontinued operations				$ 13,295	1,241
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		13,500
Gain on Possessory Interest, Net of Tax, Attributable to Noncontrolling Interest		$ 2,700
Proceeds from Sale of Property, Plant, and Equipment	$ 3,000
Gain (Loss) on Disposition of Property Plant Equipment	$ 700
Impairment Charge, Including Disposal Group and Discontinued Operations					4,500
Goodwill, Impairment Loss					2,100
Disposal Group, Including Discontinued Operation, Impairment Charges					$ 2,364