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COMMITMENTS AND CONTINGENCIES (Tables) | 12 Months Ended
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Dec. 31, 2017
Commitments and Contingencies Disclosure [Abstract] |
Long-term Purchase Commitment [Table Text Block] | The Company estimates the following commitments for each of the equipment systems, with expected timing of payments as follows as of December 31, 2017:
|  | 2018 |  | Thereafter |  | Total |
Proton Beam Units |  | $ | - |  | $ | 25,800,000 |  | $ | 25,800,000 |
Gamma Knife Units |  |  | 1,500,000 |  |  | - |  |  | 1,500,000 |
Total Commitments |  | $ | 1,500,000 |  | $ | 25,800,000 |  | $ | 27,300,000 |

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- Definition Tabular disclosure of key provisions of an arrangement under which the entity has agreed to purchase goods or services over a period of time greater than one year or the normal operating cycle, if longer, including the item for which expenditures will be made, minimum quantities, milestones, time period and committed amount. + References No definition available. + Details
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