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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details) | 3 Months Ended | 9 Months Ended | 12 Months Ended |
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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

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