Subsequent Events (Details) - Disposal Group, Not Discontinued Operations [Member] - Subsequent Event [Member]	Mar. 01, 2016 USD ($) $ / bbl	Feb. 04, 2016 USD ($)
Kansas and Nebraska Oil and Gas Properties [Member]
Subsequent Event [Line Items]
Purchase price of properties sold	$ 21,000,000
Contingent payment for properties sold	$ 2,000,000
Minimum WTI oil price for contingent consideration (in US$ per Bbl) \| $ / bbl	60
Minimum duration of WTI oil price at $60 per Bbl	60 days
Disposal Group, Including Discontinued Operation, Contingent Consideration, Minimum Oil Price Duration Following Close Period	1 year
Radisson Hotel & Suites, Austin [Member]
Subsequent Event [Line Items]
Purchase price of properties sold		$ 130,000,000

Disposal Group, Including Discontinued Operation, Contingent Consideration

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- Definition

Disposal Group, Including Discontinued Operation, Contingent Consideration, Minimum Oil Price

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Disposal Group, Including Discontinued Operation, Contingent Consideration, Minimum Oil Price Duration

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Disposal Group, Including Discontinued Operation, Contingent Consideration, Minimum Oil Price Duration Following Close Period

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Amount of consideration received or receivable for the disposal of assets and liabilities, including discontinued operation.

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- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

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