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Subsequent Event	12 Months Ended
Subsequent Event	Dec. 31, 2016
Subsequent Events [Abstract]
Subsequent Event	Subsequent Event In January 2017, the Company closed on the sale of non-core oil and gas properties in Wyoming. Net proceeds of $10.6 million, $1.1 million of which was received in 2016, were used to reduce amounts outstanding under the Company's credit facility. These assets are presented as "Assets held for sale" in the consolidated balance sheet as of December 31, 2016 at the lower of its carrying amount or estimated fair value less costs to sell. In January 2017, the Company completed the sale of 28.8 million shares of common stock. Net proceeds of approximately $65.3 million were used to reduce amounts outstanding under the Company's credit facility. In March 2017, the Company repaid the Rig Loan in full.