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Commitments and Contingencies (Details 1) - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Commitments and Contingencies Disclosure [Abstract]    
2019 $ 602  
2020 616  
2021 502  
2022 39  
Total minimum payments required 1,759  
Less amount representing interest (56)  
Present value of net minimum lease payments 1,703  
Less current portion (570) $ (568)
Capital lease noncurrent portion $ 1,133 $ 1,681