Income Taxes (Tables)

3 Months Ended

Mar. 31, 2021

Income Tax Disclosure [Abstract]

Schedule of effective income tax rate reconciliation

A reconciliation of the U.S. federal statutory tax rate to the Company’s effective income tax rate is as follows:

	Three months ended March 31,
	2021		2020
U.S. federal statutory tax rate	21.0	%	21.0	%
State income taxes, net of federal benefit	(0.1)		(0.1)
Non-U.S. income taxed at different rates	0.6		0.1
Increase (reduction) in tax benefit related to stock-based awards	0.1		(0.2)
Non-deductible expenses	—		(0.1)
Research and development credit	—		0.1
Increase in valuation allowance	(21.7)		(15.0)
Effect of tax rate differences of NOL carryback	—		3.0
Effective income tax rate	(0.1)	%	8.8	%