COMMITMENTS AND CONTINGENCIES - Breakdown of Reinsurance Balances Receivable (Details) $ in Thousands	Sep. 30, 2024 USD ($)	Dec. 31, 2023 USD ($)
Amount
Premiums receivable	$ 259,235	$ 186,940
Funds held by cedants	51,332	50,075
Premiums held by Lloyds' syndicates	296,152	264,278
Funds at Lloyd’s	110,395	115,772
Profit commission receivable	2,470	2,302
Deposit assets	0	888
Total before provision	719,584	620,255
Provision for credit losses	(865)	(854)
Reinsurance balances receivable, net	$ 718,719	$ 619,401
%
Premiums receivable	0.361	0.302
Funds held by cedants	7.10%	8.10%
Premiums held by Lloyds' syndicates	0.412	0.427
Funds at Lloyd’s	0.154	0.186
Profit commission receivable	0.003	0.004
Deposit assets	0	0.001
Total before provision	1.001	1.001
Provision for expected credit losses	(0.001)	(0.001)
Reinsurance balances receivable, net	1.000	1.000