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