Income Taxes (Tables)

9 Months Ended

Sep. 30, 2020

Income Tax Disclosure [Abstract]

Schedule of effective income tax rate reconciliation

The following table presents the principal reasons for the difference between the Company's effective income tax (benefit) rate and the U.S. federal statutory income tax (benefit) rate:

	Three Months Ended September 30,				Nine Months Ended September 30,
	2020		2019		2020		2019
U.S. federal statutory income tax (benefit) rate	21	%	21	%	(21)	%	21	%
U.S. state income taxes (benefit), net of federal income tax effect	(1)	%	1	%	(7)	%	1	%
Foreign tax rate differences and financing structure	10	%	—	%	3	%	1	%
U.S. taxes on foreign earnings	3	%	1	%	2	%	1	%
Research and development and other tax credits	(10)	%	(5)	%	(7)	%	(6)	%
Excess tax benefits from stock compensation	—	%	—	%	1	%	—	%
Uncertain income tax positions	(8)	%	(7)	%	(2)	%	(3)	%
Valuation allowances	1	%	—	%	14	%	—	%
Other differences - net	7	%	—	%	2	%	1	%
Effective income tax (benefit) rate	23	%	11	%	(15)	%	16	%