Annual report pursuant to Section 13 and 15(d)

Income Taxes - Payment for Taxes (Details)

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Income Taxes - Payment for Taxes (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Operating Loss Carryforwards      
Cash paid for taxes $ 17,406 $ 23,842 $ 29,199
Domestic      
Operating Loss Carryforwards      
Cash paid for taxes 1,917 2,160 1,647
Foreign      
Operating Loss Carryforwards      
Cash paid for taxes $ 15,489 $ 21,682 $ 27,552