GENERAL AND BASIS OF PRESENTATION - Concentration of credit risk (Details) $ in Thousands	1 Months Ended	3 Months Ended	12 Months Ended
	May 08, 2025 USD ($)	Mar. 31, 2025 USD ($) financialInstitution	Dec. 31, 2024 USD ($) financialInstitution
Concentration Risk [Line Items]
Cash, FDIC insured amount		$ 13,700	$ 31,200
Number of financial Institutions, cash investment | financialInstitution		10	10
Cash, uninsured amount		$ 71,300	$ 73,900
Trade allowance for credit losses		173,590	164,050
Total receivables | Customer Concentration Risk
Concentration Risk [Line Items]
Financing receivable, after allowance for credit loss		$ 108,100	$ 99,700
Primary customers | Accounts receivable | Customer Concentration Risk
Concentration Risk [Line Items]
Concentration risk (in percentage)		56.00%	57.00%
Kenya Power and Lighting Co. Ltd. ("KPLC")
Concentration Risk [Line Items]
Accounts receivable, past due		$ 44,700
Kenya Power and Lighting Co. Ltd. ("KPLC") | Subsequent Event
Concentration Risk [Line Items]
Proceeds over due accounts receivable	$ 15,200
ENEE
Concentration Risk [Line Items]
Accounts receivable, past due		17,300
ENEE | Subsequent Event
Concentration Risk [Line Items]
Proceeds over due accounts receivable	$ 1,300
Non-US
Concentration Risk [Line Items]
Trade allowance for credit losses		$ 119,200	$ 105,200