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Significant Accounting Policies (Details 1)
$ in Thousands
Dec. 31, 2019
USD ($)
Statement Line Items [Line Items]  
Operating lease commitments as of December 31, 2018 $ 7,441
Discounted operating lease commitments of January 1, 2019 6,795
Lease liabilities as of January 1, 2019 $ 6,795
Bottom of range [member]  
Statement Line Items [Line Items]  
Weighted average incremental borrowing rate as of January 1, 2019 1.45%
Bottom of range [member]  
Statement Line Items [Line Items]  
Weighted average incremental borrowing rate as of January 1, 2019 4.01%