Investments in AFS Debt Securities - Schedule of Investments in Debt Securities (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2022	Dec. 31, 2021
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 205,114	$ 195,796
Accrued Interest	535	462
Gross Unrealized Gains	0	4
Gross Unrealized Losses	(5,809)	(1,355)
Fair Value	199,840	194,907
Amortization of premium	(291)
U.S. Treasury securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	119,450	103,014
Accrued Interest	181	73
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(2,597)	(584)
Fair Value	117,034	102,503
Multinational securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	19,849	19,911
Accrued Interest	74	109
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(594)	(154)
Fair Value	19,329	19,866
Corporate bonds
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	43,081	39,894
Accrued Interest	239	235
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(1,883)	(480)
Fair Value	41,437	39,649
Agency TBA
Debt Securities, Available-for-sale [Line Items]
Amortized Cost		7,457
Accrued Interest		13
Gross Unrealized Gains		4
Gross Unrealized Losses		(8)
Fair Value		7,466
Agency mortgage-backed securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	10,393	4,153
Accrued Interest	26	14
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(281)	(31)
Fair Value	10,138	4,136
Other asset-backed securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	9,596	9,610
Accrued Interest	5	5
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(366)	(91)
Fair Value	9,235	9,524
Commercial paper
Debt Securities, Available-for-sale [Line Items]
Amortized Cost		9,939
Accrued Interest		0
Gross Unrealized Gains		0
Gross Unrealized Losses		0
Fair Value		9,939
Other
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	2,745	1,818
Accrued Interest	10	13
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(88)	(7)
Fair Value	$ 2,667	$ 1,824

The sum of the periodic adjustments of the differences between securities' face values and purchase prices that are charged against earnings. This is called accretion if the security was purchased at a discount and amortization if it was purchased at premium. As a noncash item, this element is an adjustment to net income when calculating cash provided by or used in operations using the indirect method.

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Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount, before tax, of unrealized loss in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amortized cost excluding accrued interest, after allowance for credit loss, of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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