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LONG-TERM DEBT | 12 Months Ended
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Dec. 31, 2015
Debt Disclosure [Abstract] |
Long-term Debt [Text Block] | Note 5 – Long-Term Debt Long-term debt consists primarily of seven notes with financing companies collateralized by the Gamma Knife equipment having an aggregate net book value of $8,597,000, the individual customer contracts and related accounts receivable at December 31, 2015. In addition, the loan to finance the Company’s unit in Peru is guaranteed by GKF and collateralized by the Company’s stock in the subsidiary, IGKP. These notes are payable in 12 to 84 fully amortizing monthly installments, mature between May 2016 and December 2020, and are collateralized by the respective Gamma Knife units. The notes accrue interest at fixed annual rates between 3.95% and 10.01%. Long term debt as of December 31, 2015 and 2014 also includes $1,000,000 in promissory notes funded by four members of the Company’s Board of Directors. The promissory notes were issued with common stock warrants. The fair value of the warrants was estimated at $145,000 and were reported as capital contributed. As of December 31, 2015 the amount of the unamortized debt discount that is short and long term is $48,000 and $37,000, respectively. The promissory notes are reported net of the amount allocated to the warrants, or debt discount, which is amortized over the term of the obligation. See Note 13-Note, Warrant, & Common Stock Purchase Agreement for additional discussion on promissory notes and warrants with the Board. As of December 31, 2014 long-term debt consisted of eight notes totaling $9,724,000 and $1,000,000 in promissory notes funded by four members of the Company’s Board of Directors. The following are contractual maturities of long-term debt by year at December 31, 2015:
Year ending December 31, |  | Principal |  | Interest |
2016 |  | $ | 2,674,000 |  | $ | 585,000 |
2017 |  |  | 2,893,000 |  |  | 430,000 |
2018 |  |  | 1,823,000 |  |  | 191,000 |
2019 |  |  | 1,185,000 |  |  | 101,000 |
2020 |  |  | 593,000 |  |  | 45,000 |
Thereafter |  |  | 429,000 |  |  | 14,000 |
|  | $ | 9,597,000 |  | $ | 1,366,000 |

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- Definition The entire disclosure for long-term debt. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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