Annual report pursuant to Section 13 and 15(d)

Income Taxes - Narrative (Details)

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Income Taxes - Narrative (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Income Taxes [Line Items]      
Increase (decrease) in deferred tax asset valuation allowance $ 6,500 $ 5,200 $ 20,400
Interest and penalties recognize in income tax expense 32 37 $ 31
Interest and penalties recognized on the balance sheet 400 400  
Unrecognized tax benefits that would impact effective tax rate 300 $ 300  
India      
Income Taxes [Line Items]      
Deferred tax liability from undistributed foreign earnings $ 100