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5. GOODWILL AND OTHER INTANGIBLE ASSETS (Details - Schedule of Goodwill) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016
Goodwill, beginning balance | $ 239,553 | $ 239,408
Goodwill allocated to assets held for sale |  | (1,126)
Goodwill transferred to other assets | (289) |
Goodwill, ending balance | 256,776 | 239,553
Advanced Radiological Imaging [Member] |  |
Goodwill acquired through acquisitions |  | 1,280
Diagnostic Imaging Group, LLC [Member] |  |
Adjustments to preliminary allocations of purchase price |  | (47)
Landmark Imaging [Member] |  |
Goodwill acquired through acquisitions |  | $ 38
Resolution Imaging Medical Corp [Member] |  |
Goodwill acquired through acquisitions | 1,901 |
MRI Centers, Inc. [Member] |  |
Goodwill acquired through acquisitions | 401 |
Goodwill, ending balance | 401 |
Santa Monica Imaging Group JV [Member] |  |
Goodwill acquired through acquisitions | (1,901) |
D&D Diagnostics, Inc [Member] |  |
Goodwill acquired through acquisitions | 1,519 |
Goodwill, ending balance | 1,500 |
Stockton MRI, Inc [Member] |  |
Goodwill acquired through acquisitions | 3,101 |
Goodwill, ending balance | 3,100 |
Hematology Oncology [Member] |  |
Goodwill acquired through acquisitions | (110) |
DIA, Inc [Member] |  |
Goodwill acquired through acquisitions | 9,185 |
Adjustments to preliminary allocations of purchase price | 1,058 |
Breastlink Medical [Member] |  |
Goodwill acquired through acquisitions | (509) |
RDI, Inc. [Member] |  |
Goodwill acquired through acquisitions | 1,202 |
RadSite, LLC [Member] |  |
Goodwill acquired through acquisitions | $ 1,665 |

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