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Equity (Details) - USD ($) $ in Thousands |  |  |  |  |  |  | 12 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Dec. 09, 2016 | Mar. 11, 2016 | Apr. 21, 2015 | Apr. 06, 2015 | Feb. 27, 2015 | May 29, 2014 | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014 | Apr. 02, 2015 | Apr. 01, 2015
Subsidiary, Sale of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |
Sale of Stock, Consideration Received on Transaction | $ 145,800 | $ 141,500 |  |  |  |  |  |  |  |  |
Adjustments to Additional Paid in Capital, Stock Issued, Issuance Costs | $ 400 | $ 800 |  |  |  |  | $ 1,190 | $ 1,151 | $ 590 |  |
Common stock, shares authorized |  |  |  |  |  |  | 120,000,000 | 120,000,000 |  |  |
Offering costs |  |  | $ 1,200 |  |  | $ 600 |  |  |  |  |
Proceeds from issuance of common stock |  |  | $ 187,600 |  |  | $ 181,300 | $ 288,510 | $ 188,720 | 181,875 |  |
Repayments of long-term debt |  |  |  |  |  |  | $ 120,000 | $ 476,982 | $ 180,000 |  |
Common Stock [Member] |  |  |  |  |  |  |  |  |  |  |
Subsidiary, Sale of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |
Sale of Stock, Number of Shares Issued in Transaction | 6,000,000 | 7,500,000 |  |  |  |  |  |  |  |  |
Common stock, shares authorized |  |  |  |  |  |  |  |  |  | 120,000,000 | 80,000,000
Shares converted |  |  |  | 1,500,000 |  |  |  |  |  |  |
Shares held in escrow |  |  |  | 166,667 |  |  |  |  |  |  |
Issuance of Class A common stock, shares |  |  | 7,000,000 |  |  | 7,500,000 |  |  |  |  |
Harvey E Yates Company [Member] |  |  |  |  |  |  |  |  |  |  |
Subsidiary, Sale of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |
Shares issued upon conversion |  |  |  |  | 10 |  |  |  |  |  |
Harvey E Yates Company [Member] | Convertible Preferred Stock [Member] |  |  |  |  |  |  |  |  |  |  |
Subsidiary, Sale of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |
Shares issued for acquisition |  |  |  |  | 150,000 |  |  |  |  |  |
Shares issued as consideration in business combination |  |  |  |  | 150,000 |  |  |  |  |  |
Harvey E Yates Company [Member] | Common Stock [Member] |  |  |  |  |  |  |  |  |  |  |
Subsidiary, Sale of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |
Shares issued for acquisition |  |  |  |  | 3,300,000 |  |  |  |  |  |

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