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ACCOUNTING POLICIES (Details Textual) $ / shares in Units, € in Millions |  | 12 Months Ended
--- | --- | ---
Jun. 10, 2014 USD ($) | Dec. 31, 2015 USD ($) $ / shares shares | Dec. 31, 2014 USD ($) $ / shares shares | Dec. 31, 2014 EUR (€) shares | Dec. 31, 2013 USD ($) $ / shares shares
Accounting Policies [Line Items] |  |  |  |  |
Line of Credit Facility, Maximum Amount Outstanding During Period |  |  | $ 9,000,000 |  |
Interest Costs Capitalized |  | $ 431,000 | 371,000 |  | $ 390,000
Property Subject to or Available for Operating Lease, Net, Total |  | 83,267,000 | 82,151,000 |  |
Property Subject to or Available for Operating Lease, Accumulated Depreciation |  | $ 47,198,000 | $ 46,138,000 |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount | shares |  | 614,000 | 633,000 | 633,000 | 576,000
Gain (Loss) on Disposition of Stock in Subsidiary |  | $ 0 | $ (572,000) |  | $ 0
Warrants Issued With Promissory Notes During The Period | shares |  | 200,000 | 200,000 | 200,000 |
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares |  | $ 2.20 | $ 2.20 |  |
Proceeds from Divestiture of Interest in Consolidated Subsidiaries |  | $ 0 | $ 768,000 |  | 0
Fair Value of Assets Acquired |  | 0 | 700,000 |  | 0
Advertising Expense |  | 115,000 | 155,000 |  | 119,000
Foreign Currency Transaction Loss, before Tax |  | 0 |  |  | $ 1,174,000
Restatement Adjustment [Member] |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |
Deferred Tax Assets, Net of Valuation Allowance, Noncurrent, Total |  | 367,000 |  |  |
Noncontrolling Interest [Member] |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |
Prior Period Reclassification Adjustment |  |  | 400,000 |  |
Additional Paid-in Capital [Member] |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |
Prior Period Reclassification Adjustment |  |  | 235,000 |  |
Sale of EWRS Turkey [Member] |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |
Foreign Currency Transaction Gain, before Tax |  |  | 161,000 |  |
Cumulative Translation Adjustment, Net of Tax, Period Increase (Decrease) |  |  | 779,000 |  |
Payments for (Proceeds from) Investments |  |  | 6,000,000 | € 4.2 |
Gain (Loss) on Disposition of Stock in Subsidiary | $ 572,000 |  |  |  |
Proceeds from Divestiture of Interest in Consolidated Subsidiaries |  |  | 768,000 |  |
Certificates of Deposit [Member] |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |
Line of Credit Facility, Maximum Amount Outstanding During Period |  |  | 9,000,000 |  |
Mevion Medical Systems Inc [Member] |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |
Cost Method Investments |  | $ 579,000 | $ 2,709,000 |  |
Cost Method Investment Interest Percentage |  | 0.46% |  |  |
Maximum [Member] |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |
Stock Options Exercise Price | $ / shares |  | $ 3.15 | $ 6.16 |  | $ 6.50
Maximum [Member] | Medical and Office equipment [Member] |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |
Property, Plant and Equipment, Estimated Useful Lives |  | 10 years |  |  |
Minimum [Member] |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |
Stock Options Exercise Price | $ / shares |  | $ 2.05 | $ 2.43 |  | $ 2.30
Minimum [Member] | Medical and Office equipment [Member] |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |
Property, Plant and Equipment, Estimated Useful Lives |  | 3 years |  |  |

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