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Commitments and contingent liabilities (Details Textual) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
CONTINGENT LIABILITIES AND COMMITMENTS [Line Items] |  |  |
Operating Leases, Rent Expense | $ 100 | $ 104 | $ 120
Guarantee For Performance Of Lease Agreement | 26 |  |
Operating Leases, Rent Expense, Net | 46 | 43 | $ 25
Parent [Member] |  |  |
CONTINGENT LIABILITIES AND COMMITMENTS [Line Items] |  |  |
Guarantee For Performance Of Lease Agreement | 13 |  |
NonCurrent Assets [Member] |  |  |
CONTINGENT LIABILITIES AND COMMITMENTS [Line Items] |  |  |
Guarantee For Performance Of Lease Agreement | 11 |  |
Prepaid Expenses [Member] |  |  |
CONTINGENT LIABILITIES AND COMMITMENTS [Line Items] |  |  |
Guarantee For Performance Of Lease Agreement | 2 |  |
Subsidiaries [Member] |  |  |
CONTINGENT LIABILITIES AND COMMITMENTS [Line Items] |  |  |
Operating Leases, Rent Expense | $ 80 | $ 36 |

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- Definition The amount of guarantee given by the company as a security for performance of lease agreement. + References No definition available. + Details
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- Definition Amount of rent expense incurred for leased assets, including but not limited to, furniture and equipment, that is not directly or indirectly associated with the manufacture, sale or creation of a product or product line. + References No definition available. + Details
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- Definition Rental expense for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6453985&loc=d3e41499-112717 + Details
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