LOSS AND LOSS ADJUSTMENT EXPENSE RESERVES - Liability for Unpaid Claims and Claims Adjustment Expense (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021	Dec. 31, 2020
Liability for Claims and Claims Adjustment Expense [Line Items]
Loss adjustment expense reserves	$ 13,600
Case reserves	182,624		$ 190,220
IBNR	343,821		333,790
Total	526,445	$ 514,642	524,010	$ 494,179
Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward]
Gross balance at January 1	524,010	494,179
Less: Losses recoverable			(11,100)	(16,851)
Net balance at January 1	512,910	477,328
Incurred losses related to:
Current year	158,788	185,281
Prior years	(558)	(603)
Total incurred	158,230	184,678
Paid losses related to:
Current year	(27,896)	(47,262)
Prior years	(116,200)	(114,680)
Total paid	(144,096)	(161,942)
Foreign currency revaluation	(10,025)	246
Net balance at June 30	517,019	500,310
Add: Losses recoverable	9,426	14,332	11,100
Gross balance at June 30	526,445	514,642
Estimate of net losses	(558)	(603)
Health
Liability for Claims and Claims Adjustment Expense [Line Items]
Total	7,202	14,584	9,939	17,485
Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward]
Gross balance at January 1	9,939	17,485
Less: Losses recoverable			$ 0	$ 0
Net balance at January 1	9,939	17,485
Incurred losses related to:
Current year	5,293	22,895
Prior years	3,466	(1,667)
Total incurred	8,759	21,228
Paid losses related to:
Current year	(1,843)	(11,941)
Prior years	(9,653)	(12,188)
Total paid	(11,496)	(24,129)
Foreign currency revaluation	0	0
Net balance at June 30	7,202	14,584
Add: Losses recoverable	0	0
Gross balance at June 30	7,202	14,584
Estimate of net losses	$ 3,466	$ (1,667)