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Income Taxes (Details) - USD ($)
$ in Thousands
9 Months Ended
Sep. 30, 2019
Dec. 31, 2018
Income Tax Disclosure [Abstract]    
Unrecognized tax benefits $ 1,438 $ 1,403
Amounts of tax benefits that would affect effective tax rate if recognized 1,310 1,272
Income tax accrued interest 192 136
Income tax penalties accrued
Statute of limitations $ 207