Customer Deposits - Narrative (Details) £ in Thousands	Sep. 30, 2025 USD ($)	Sep. 30, 2025 GBP (£)	Dec. 31, 2024 USD ($)
Deposits [Abstract]
Customer deposits	$ 694,815,000		$ 134,100,000
Deposits, FSCS insured amount	114,300	£ 85
Deposits over the insured amount	$ 195,900,000

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.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 942
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(12))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1

Name:	us-gaap_Deposits
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant