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Investment in SLM California - Disclosure of changes in carrying amount of associated entity (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Disclosure of associates [line items]    
Opening Balance $ 58,827  
Capital Investment 4,742 $ 3,517
Ending Balance 61,126 58,827
SLM California    
Disclosure of associates [line items]    
Opening Balance 58,827 58,189
Capital Investment 4,742 3,517
Company's share of net income of SLM California 4,329 4,134
Distributions (6,772) (7,013)
Ending Balance $ 61,126 $ 58,827