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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Concentration of Credit Risk (Details) - Revenues - Location of facilities	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
New York
Concentration of Credit Risk
Percentage of total revenues (as a percent)	19.00%	16.00%	16.00%
Florida
Concentration of Credit Risk
Percentage of total revenues (as a percent)	15.00%	15.00%	16.00%
California
Concentration of Credit Risk
Percentage of total revenues (as a percent)	8.00%	8.00%	8.00%
Texas
Concentration of Credit Risk
Percentage of total revenues (as a percent)	9.00%	9.00%	10.00%

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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