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Deposits - Schedule of Deposits (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Interest-bearing money market deposits	$ 370,813	$ 439,894
Customer deposits	129,180	116,694
Demand deposits	960,000	0
Contractual deposits with maturities within 1 year	566,427	354,807
Short-term deposits	2,026,420	911,395
Contractual deposits with maturities greater than 1 year and less than 5 years	652,214	148,591
Total deposits	$ 2,678,634	$ 1,059,986
Weighted average cost of demand deposits outstanding (as a percent)	0.03%	0.00%
Weighted average cost of funds on certificates of deposit outstanding (as a percent)	0.48%	1.81%
Weighted average cost of interest-bearing money market deposits (as a percent)	0.20%	0.27%
Certificates of deposit, denominations ($250 or less)	$ 250	$ 250
Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Certificates of deposit, maturities range	9 months	1 year
Certificates of deposit, fixed interest rates range	0.12%	1.35%
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Certificates of deposit, maturities range	5 years	5 years
Certificates of deposit, fixed interest rates range	3.52%	3.52%

X

- Definition

The amount of money in accounts that may bear interest and that the depositor is entitled to withdraw at any time without prior notice.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.12)
-URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878

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X

- Definition

The current portion, due within one year or one operating cycle, if longer, of deposits held other than customer deposits.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.20)
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- Definition

The aggregate of all deposit liabilities held by the entity, including foreign and domestic, interest and noninterest bearing; may include demand deposits, saving deposits, Negotiable Order of Withdrawal (NOW) and time deposits among others.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Topic 942
-SubTopic 210
-Section S99
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- Definition

Amount of interest-bearing domestic money market demand account deposit liabilities.

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- Definition

Amount of domestic noninterest-bearing deposits held by the entity, which may include demand deposits, checking, brokered and retail deposits.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
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- Definition

The weighted average interest rate for domestic certificates of deposit liabilities.

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The weighted average interest rate for domestic demand deposit liabilities.

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The weighted average interest rate for domestic money market demand account deposit liabilities.

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- Definition

Certificate of deposits fixed interest rates range

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- Definition

Certificate of Deposits Maturities, Greater Than One Year And Less Than Five Years

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Certificate of deposits maturities range

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Certificate of Deposits Maturities, Year One

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- Definition

Certificates of deposits denominations in dollar amount

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