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4. FACILITY ACQUISITIONS (Details - Revenue) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
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
Net revenue | $ 215,706 | $ 208,366 | $ 204,289 | $ 181,267 | $ 185,552 | $ 184,059 | $ 179,082 | $ 168,876 | $ 809,628 | $ 717,569 | $ 702,986
Net income | $ 881 | $ 7,987 | $ 3,395 | $ (4,554) | $ 4,205 | $ 4,451 | $ 5,144 | $ (12,424) | 7,709 | $ 1,376 | $ 2,120
Diagnostic Imaging Group, LLC [Member] |  |  |  |  |  |  |  |  |  |  |
Net revenue |  |  |  |  |  |  |  |  | 17,498 |  |
Pretax income |  |  |  |  |  |  |  |  | 1,880 |  |
Net income |  |  |  |  |  |  |  |  | $ 1,166 |  |

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