Marketable Securities

9 Months Ended

Sep. 30, 2024

Investments, Debt and Equity Securities [Abstract]

Marketable securities

As of September 30, 2024, the Company had $715,711 of available-for-sale securities (December 31, 2023 – trading securities of $13,867 and available-for-sale-securities of $768,364). Amortized cost, unrealized gain (loss) recognized in accumulated other comprehensive income (loss) and fair value of available-for-sale securities consisted of the following:


	September 30, 2024							December 31, 2023
	Amortized Cost		Unrealized Gain (Loss)			Fair Value		Amortized Cost		Unrealized Gain (Loss)			Fair Value
Contractual maturity of 0 to 1 years:
Guaranteed investment certificates	$	15,479	$	14		$	15,493	$	7,549	$	135		$	7,684
U.S. treasuries		100,314		78			100,392		192,193		(249	)		191,944
U.S. government securities		27,106		(10	)		27,096		98,092		(180	)		97,912
Commercial paper		107,074		245			107,319		119,041		67			119,108
Corporate debt securities		314,948		1,146			316,094		58,824		100			58,924
Contractual maturity of 1 to 3 years:
U.S. treasuries		71,893		349			72,242		53,294		243			53,537
Corporate debt securities		76,571		504			77,075		238,458		797			239,255
Total	$	713,385	$	2,326		$	715,711	$	767,451	$	913		$	768,364

Allowance for credit losses or impairment on these marketable securities have not been recognized as these securities are high credit quality, investment grade securities that the Company does not intend to sell and will not be required to sell prior to their anticipated recovery, and the decline in fair value is primarily due to changes in interest rates.