Investments (Tables)

12 Months Ended

Dec. 31, 2023

Investments, Debt and Equity Securities [Abstract]

Schedule of Short-Term Investments

Short-term investments as of December 31, 2023 consisted of the following available-for-sale debt securities:

	Amortized Cost	Gross Unrealized Gains	Gross Unrealized Losses	Fair Value (Net Carrying Amount)
	$	$	$	$
U.S. treasury securities	2,565	35	—	2,600
Total	2,565	35	—	2,600

Short-term investments as of December 31, 2022 consisted of the following available-for-sale debt securities:

	Amortized Cost	Gross Unrealized Gains	Gross Unrealized Losses	Fair Value (Net Carrying Amount)
	$	$	$	$
U.S. treasury securities	674,262	—	9,011	665,251
Total	674,262	—	9,011	665,251

Schedule of Equity Method Investments

The following table summarizes unrealized (losses) gains recognized on the Company’s investment in Leap:

	Year Ended December 31,
	2023	2022	2021
	$	$	$
Other income (expense), net	(425)	(30,102)	9,386

The following table summarizes unrealized (losses) gains recognized on the Company’s investment in equity securities without readily determinable fair values:

	Year Ended December 31,
	2023	2022	2021
	$	$	$
Other income (expense), net	(6,448)	5,065	—

The following table summarizes losses recognized on the Company’s equity-method investments:

	Year Ended December 31,
	2023	2022	2021
	$	$	$
Other income (expense), net	(7,856)	(3,682)	(1,796)

Schedule of Fair Value of the Common Stock and Warrants

As of December 31, 2023 and 2022, the fair value of the common stock and warrants was as follows:

	As of December 31,
	2023	2022
	$	$
Fair value of Leap common stock	3,046	3,307
Fair value of Leap warrants	542	706