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Equity - Common and Preferred Stock - Narrative (Details) |  |  |  |  |  |  |  |  |  | 9 Months Ended | 12 Months Ended |
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Jan. 08, 2017 shares | Oct. 05, 2016 shares | Aug. 23, 2016 shares | Aug. 01, 2016 shares | Jun. 08, 2016 shares | May 18, 2016 shares | May 04, 2016 shares | Apr. 01, 2016 shares | Feb. 03, 2016 shares | Sep. 30, 2016 | Dec. 31, 2016 shares | Dec. 31, 2015 shares
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Number of shares of common stock exchanged (in shares) |  |  |  |  | 500,000 |  |  | 1,725,000 | 1,000,000 |  |  |
Preferred stock, shares authorized (in shares) |  |  |  |  |  |  |  |  |  |  | 20,000,000 | 20,000,000
Preferred stock, shares issued (in shares) |  |  |  |  |  |  |  |  |  |  | 0 | 0
Preferred stock, shares outstanding |  |  |  |  |  |  |  |  |  |  | 0 | 0
Common Class A |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Common stock, shares outstanding (in shares) |  |  |  |  |  |  |  |  |  |  | 6,496,559 | 3,118,623
Common stock voting rights ratio |  |  |  |  |  |  |  |  |  |  | 1 |
Common Class B |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Common stock, shares outstanding (in shares) |  |  |  |  |  |  |  |  |  |  | 10,224,742 | 10,750,000
Common stock voting rights ratio |  |  |  |  |  |  |  |  |  | 1 | 1 |
Restricted Stock Units |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Number of shares vested (in shares) |  |  |  |  |  | 53,853 | 101,210 |  |  |  | 115,271 |
Number of shares of common stock distributed to the holder of restricted stock units (in shares) |  |  |  |  |  |  |  |  |  |  | 81,864 |
Number of shares of common stock withheld to cover taxes owed on vested units (in shares) |  |  |  |  |  |  |  |  |  |  | 33,407 |
Common Stock |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Number of shares of common stock distributed to the holder of restricted stock units (in shares) |  |  |  |  |  | 43,683 | 77,814 |  |  |  |  |
Common Stock | Restricted Stock Units |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Number of shares of common stock withheld to cover taxes owed on vested units (in shares) |  |  |  |  |  | 10,170 | 23,396 |  |  |  |  |
Provider Companies | Common Class B |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Number of shares issued for acquisition (in shares) |  |  |  | 699,742 |  |  |  |  |  |  |  |
Major Energy Purchase Agreement | Common Class B |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Number of shares issued for acquisition (in shares) |  |  | 2,000,000 |  |  |  |  |  |  |  |  |
Censtar Convertible Debt | Common Class B |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Number of shares, irrevocable commitment to convert (in shares) |  | 383,090 |  |  |  |  |  |  |  |  |  |
Censtar Convertible Debt | Subsequent Event | Common Class B |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Number of shares, irrevocable commitment to convert (in shares) | 134,731 |  |  |  |  |  |  |  |  |  |  |

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