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Income taxes
3 Months Ended
Mar. 31, 2021
Income taxes  
Income taxes

(11) Income taxes

During the three months ended March 31, 2021 and 2020, the Company recorded a tax benefit of $6 and a tax provision of $38, respectively. The year to date tax benefit and provision consist primarily of foreign income taxes and state taxes in the United States.  The provision differs from the U.S. federal statutory rate of 21% primarily due to the full valuation allowance recorded against the U.S. deferred tax assets, including the current year to date losses. The Company maintains a valuation allowance against its U.S. deferred tax assets as the Company believes it is more likely than not the deferred tax assets will not be realized.