Assets Held for Sale - Additional Information (Details) - USD ($)	12 Months Ended
	Dec. 31, 2014	Jan. 15, 2015
Income Statement Balance Sheet And Additional Disclosures Assets Held For Sale Not Part Of Disposal Group [Line Items]
Assets held for sale	$ 41,211,000
Depreciation	$ 0
Cross Valley | Hunt Consolidated, Inc. and affiliates
Income Statement Balance Sheet And Additional Disclosures Assets Held For Sale Not Part Of Disposal Group [Line Items]
Assets held for sale		$ 34,200,000
Golden Spread Project | Hunt Consolidated, Inc. and Subsidiaries
Income Statement Balance Sheet And Additional Disclosures Assets Held For Sale Not Part Of Disposal Group [Line Items]
Assets held for sale		$ 7,000,000