Business Combination (Details) - HEYCO $ in Thousands |
Feb. 27, 2015
USD ($)
a
shares
|
Sep. 30, 2015
USD ($)
|
|---|---|---|
| Business Acquisition, Equity Interests Issued or Issuable [Line Items] | ||
| Oil and natural gas producing properties and undeveloped acreage | a | 58,600 | |
| Net acreage acquired | a | 18,200 | |
| Consideration for the business combination | $ 33,600 | |
| Shares of common stock converted for each share of Series A Preferred Stock | shares | 10 | |
| Additional amount paid for customary purchase price adjustments | $ 3,000 | |
| Deferred tax liabilities assumed | 75,966 | |
| Liabilities assumed in business combination | $ 4,600 | |
| Transaction costs incurred | $ 2,500 | |
| Common Stock | ||
| Business Acquisition, Equity Interests Issued or Issuable [Line Items] | ||
| Shares issued as consideration in business combination | shares | 3,300,000 | |
| Preferred Stock | ||
| Business Acquisition, Equity Interests Issued or Issuable [Line Items] | ||
| Shares issued as consideration in business combination | shares | 150,000 |