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Significant Accounting Policies (Schedule of Contract Assets and Liabilities) (Details) - USD ($)
$ in Thousands
Mar. 31, 2018
Mar. 31, 2017
Opening [Member]    
Disaggregation of Revenue [Line Items]    
Receivables $ 266 $ 270
Contract Liabilitiy 235 232
Closing [Member]    
Disaggregation of Revenue [Line Items]    
Receivables 286 284
Contract Liabilitiy 212 215
Increase/(Decrease) [Member]    
Disaggregation of Revenue [Line Items]    
Receivables 20 14
Contract Liabilitiy $ (23) $ (17)