Annual report pursuant to Section 13 and 15(d)

Income Taxes - Components of Income Tax Provision (Benefit) - (Details)

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Income Taxes - Components of Income Tax Provision (Benefit) - (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Income Tax Disclosure [Abstract]      
Current $ 28 $ 24 $ 7
Total $ 28 $ 24 $ 7