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Income Taxes (Tables)
9 Months Ended
Sep. 30, 2021
Income Tax Disclosure [Abstract]  
Reconciliation of Unrecognized Tax Benefits A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows:
2021
 (in thousands)
Balance at January 1, 2021$4,937 
Additions based on tax positions related to current year372 
Reductions for tax positions of prior years(179)
Reductions due to lapse of applicable statute of limitations(533)
Balance at September 30, 2021$4,597