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Business Acquisitions Sales and Earnings (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 12 Months Ended
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Dec. 31, 2015 | Sep. 30, 2015 | Jun. 30, 2015 | Mar. 31, 2015 | Dec. 31, 2014 | Sep. 30, 2014 | Jun. 30, 2014 | Mar. 31, 2014 | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | $ 73,664 | $ 79,017 | $ 109,338
Net income (loss) |  |  |  |  |  |  |  |  | $ (8,623) | $ (25,803) | $ 7,865
Basic (in dollars per share) | $ (0.39) | $ (0.01) | $ (0.06) | $ (0.07) | $ (0.75) | $ 0.05 | $ (0.03) | $ (0.05) | $ (0.54) | $ (0.78) | $ 0.23
Diluted (in dollars per share) | $ (0.39) | $ (0.01) | $ (0.06) | $ (0.07) | $ (0.75) | $ 0.05 | $ (0.03) | $ (0.05) | $ (0.54) | $ (0.78) | $ 0.23
PECO and FGC Acquisitions |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  |  | $ 4,193 |
Net income (loss) |  |  |  |  |  |  |  |  |  | $ (120) |
Basic (in dollars per share) |  |  |  |  |  |  |  |  |  | $ 0.00 |
Diluted (in dollars per share) |  |  |  |  |  |  |  |  |  | $ 0.00 |

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