Annual report pursuant to Section 13 and 15(d)

Income Taxes - Summary of Gross Unrecognized Tax Benefits (Details)

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Income Taxes - Summary of Gross Unrecognized Tax Benefits (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Income Tax Disclosure [Abstract]    
Gross unrecognized tax benefits, beginning of the year $ 190 $ 91
Additions for tax positions related to the current year 193 93
Effect of exchange rate (6) 2
Subtotal 377 186
Interest and penalties 91 4
Total gross unrecognized tax benefits, end of the year $ 468 $ 190