CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Nov. 15, 2019	Jun. 10, 2014
Tax expense (benefit) for unrealized holding gain (loss) on available-for-sale investments	$ 0	$ 0	$ 181
Accounting Standards Update [Extensible List]		Accounting Standards Update 2020-06 [Member]
Convertible Debt | 3.25% Convertible Notes
Stated interest rate					3.25%
Convertible Debt | 1.75% Convertible Notes
Stated interest rate				1.75%