Our effective tax rate increased from a benefit of 30.5% for the three months ended March 31, 2020, to an expense of 53.9% for the three months ended March 31, 2021. The increase in the effective tax rate between the two periods was primarily driven by a tax benefit of $7.4 million recognized during the three months ended March 31, 2020 as a result of the passing of the Coronavirus Aid, Relief, and Economic Security Act (the “CARES Act”) on March 27, 2020, which allowed for the carryback of federal net operating losses, partially offset with tax expense in our international operations in the current quarter. Additionally, on February 12, 2021, the Alabama Business Tax Competitiveness Act was signed into law. As a result of the Act, we recognized an expense of $1.6 million related to the revaluation of our deferred tax assets, which was offset by changes in our valuation allowance previously recorded against our domestic deferred tax assets. The total increase in the valuation allowance against our domestic deferred tax assets was recorded in the amount of $2.7 million during the three months ended March 31, 2021.

The Company continually reviews the adequacy of its valuation allowance and recognizes the benefits of deferred tax assets only as the reassessment indicates that it is more likely than not that the deferred tax assets will be recognized in accordance with ASC 740, Income Taxes. As of March 31, 2021, the Company had deferred tax assets totaling $58.0 million, and a valuation allowance totaling $48.5 million had been established against those deferred tax assets. The remaining $9.4 million in deferred tax assets not offset by a valuation allowance are located in various foreign jurisdictions where the Company believes it is more likely than not we will realize these deferred tax assets. Our assessment of the realizability of our deferred tax assets includes the evaluation of historical operating results as well as the evaluation of evidence which requires significant judgement, including the evaluation of our three-year cumulative income position, future taxable income projections and tax planning strategies. Should management’s conclusion change in the future and an additional valuation allowance or a partial or full release of the valuation allowance becomes necessary, it could have a material effect on our consolidated financial statements.

Supplemental balance sheet information related to deferred tax assets is as follows:

	As of March 31,2021
(In thousands)	Deferred Tax Assets		Valuation Allowance			Deferred Tax Assets, net
Domestic	$	46,479	$	(46,479	)	$	—
International		11,473		(2,025	)		9,448
Total	$	57,952	$	(48,504	)	$	9,448

	As of December 31, 2020
(In thousands)	Deferred Tax Assets		Valuation Allowance			Deferred Tax Assets, net
Domestic	$	43,791	$	(43,791	)	$	—
International		11,896		(2,027	)		9,869
Total	$	55,687	$	(45,818	)	$	9,869