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Debt (Details) - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Debt Disclosure [Abstract]    
Term loan - repaid in full on February1, 2019 $ 3,053 $ 3,286
Capital leases (Note 7) 54 57
Total 3,107 3,343
Less: Current portion (3,075) (249)
Long-term debt $ 32 $ 3,094