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Equity - Non-controlling Interest (Details) - shares |  |  | 1 Months Ended | 3 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | ---
Jan. 31, 2017 | Jan. 08, 2017 | Jan. 31, 2017 | Mar. 31, 2017 | Dec. 31, 2016
The Company |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Economic interests percentage |  |  |  | 37.70% | 38.85%
The Company | NuDevco Retail and Retailco |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Economic interests percentage |  |  |  | 62.30% | 61.15%
Retailco | Common Class B |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Number of shares from conversion (shares) |  |  | 134,731 |  |
Censtar Convertible Debt | Common Class B |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Number of shares from conversion (shares) | 383,090 | 134,731 | 383,090 |  |

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- Definition The number of shares issued in exchange for the original debt being converted in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or payments in the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4332-108586 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4304-108586 + Details
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