SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2023 performanceObligation system_option	Sep. 30, 2022	Sep. 30, 2023 performanceObligation system_option	Sep. 30, 2022	Dec. 31, 2022	Jan. 01, 2023 USD ($)
Summary Of Significant Accounting Policies [Line Items]
Proposed national payments rates	0.05
Number of Zio system options | system_option	3		3
Number of performance obligations | performanceObligation	2		2
Federal Government Agencies | Revenue | Customer Concentration Risk
Summary Of Significant Accounting Policies [Line Items]
Concentration of credit risk (as a percent)	25.00%	26.00%	25.00%	24.00%
Federal Government Agencies | Accounts Receivable | Accounts Receivable Concentration Risk
Summary Of Significant Accounting Policies [Line Items]
Concentration of credit risk (as a percent)			22.00%		22.00%
Product And Services Zio X T Service Code93247
Summary Of Significant Accounting Policies [Line Items]
Reimbursement rate						$ 243.65
Product And Services Zio X T Service Code93247 | Minimum
Summary Of Significant Accounting Policies [Line Items]
Estimated reimbursement rate						247.59
Product And Services Zio X T Service Code93247 | Maximum
Summary Of Significant Accounting Policies [Line Items]
Estimated reimbursement rate						334.46
Product And Services Zio X T Service Code93243
Summary Of Significant Accounting Policies [Line Items]
Reimbursement rate						231.79
Product And Services Zio X T Service Code93243 | Minimum
Summary Of Significant Accounting Policies [Line Items]
Estimated reimbursement rate						235.54
Product And Services Zio X T Service Code93243 | Maximum
Summary Of Significant Accounting Policies [Line Items]
Estimated reimbursement rate						$ 318.17