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Condensed Consolidated Statements of Stockholders' Equity (Parenthetical) - USD ($)	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021	Jan. 01, 2022	Nov. 15, 2019
Tax expense (benefit) for unrealized holding gain (loss) on available-for-sale investments	$ 0	$ 0	$ 0	$ 0
Accounting Standards Update [Extensible Enumeration]					Accounting Standards Update 2020-06 [Member]
3.25% Convertible Notes | Convertible Debt
Stated interest rate		3.25%		3.25%
1.75% Convertible Notes | Convertible Debt
Stated interest rate	1.75%		1.75%			1.75%	1.75%

X

- Definition

Indicates amendment to accounting standards.

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