Business Combination (Details) (USD $)	3 Months Ended		0 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Feb. 27, 2015
Business Acquisition, Equity Interests Issued or Issuable [Line Items]
Revenues	$ 72,412,000	$ 73,980,000
HEYCO
Business Acquisition, Equity Interests Issued or Issuable [Line Items]
Oil and natural gas producing properties and undeveloped acreage			58,600
Net acreage acquired			18,200
Consideration for the business combination			33,600,000
Shares of common stock converted for each share of Series A Preferred Stock			10
Additional amount paid for customary purchase price adjustments			3,000,000
Deferred tax liabilities assumed			75,966,000
Liabilities assumed in business combination			4,600,000
Transaction costs incurred	2,200,000
Revenues	700,000
Common Stock | HEYCO
Business Acquisition, Equity Interests Issued or Issuable [Line Items]
Shares issued in business combination			3,300,000
Preferred Stock | HEYCO
Business Acquisition, Equity Interests Issued or Issuable [Line Items]
Shares issued in business combination			$ 150,000