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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Schedule of Changes in Contractual Allowance (Details) - USD ($) $ in Thousands	9 Months Ended		12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Changes In The Contractual Allowance
Balance, beginning of period	$ 41,389	$ 31,274	$ 31,274
Add: provision for contractual adjustments	39,060	31,534	41,158
Less: contractual adjustments	(32,072)	(259)	(31,043)
Balance, end of period	$ 48,377	$ 62,549	$ 41,389