Income Taxes

3 Months Ended

Mar. 31, 2023

Income Tax Disclosure [Abstract]

Income Taxes

Income Taxes

The Company’s effective tax rates for the three months ended March 31, 2022 and 2023, are as follows:

	Three Months Ended March 31,
	2022			2023
Provision for income taxes	$	19		$	16
Effective tax rate	0.06		%	(0.01)		%

The Company's tax provision and the resulting effective tax rate for interim periods is determined based upon its estimated annual effective tax rate adjusted for the effect of discrete items arising during the period. The decrease in the effective tax rate for the three months ended March 31, 2023, compared to the three months ended March 31, 2022, was primarily driven by a decrease in the Company's state tax liabilities in 2023. The effective tax rate differs from the U.S. statutory tax rate primarily due to the valuation allowance on the Company’s deferred tax assets as it is more likely than not that some or all of these deferred tax assets will not be realized.