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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Additional Information (Details)
12 Months Ended
Dec. 31, 2022
USD ($)
operating_segment
systemOption
performanceObligation
reporting_unit
Dec. 31, 2021
USD ($)
Dec. 31, 2020
USD ($)
Jan. 01, 2023
USD ($)
Summary Of Significant Accounting Policies [Line Items]        
Number of operating segments | operating_segment 1      
Impairment charges $ 0 $ 0 $ 0  
Number of reporting unit | reporting_unit 1      
Long-lived asset impairment charges $ 23,200,000      
Number of Zio System options | systemOption 3      
Number of performance obligations | performanceObligation 2      
Unrecognized tax benefit income tax interest and penalty charges $ 0      
Internal-use software        
Summary Of Significant Accounting Policies [Line Items]        
Internal-use software, estimated useful life (in years) 3 years      
Federal Government Agencies | Revenue | Customer Concentration Risk        
Summary Of Significant Accounting Policies [Line Items]        
Concentration of credit risk (as a percent) 25.00% 14.00% 27.00%  
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% 8.00%    
Minimum        
Summary Of Significant Accounting Policies [Line Items]        
Property and equipment, estimated useful life (in years) 3 years      
Maximum        
Summary Of Significant Accounting Policies [Line Items]        
Property and equipment, estimated useful life (in years) 5 years      
Product And Services Zio X T Service Code93243 | Subsequent Event        
Summary Of Significant Accounting Policies [Line Items]        
Reimbursement rate       $ 231.79
Product And Services Zio X T Service Code93243 | Minimum | Subsequent Event        
Summary Of Significant Accounting Policies [Line Items]        
Estimated reimbursement rate       235.54
Product And Services Zio X T Service Code93243 | Maximum | Subsequent Event        
Summary Of Significant Accounting Policies [Line Items]        
Estimated reimbursement rate       318.17
Product And Services Zio X T Service Code93247 | Subsequent Event        
Summary Of Significant Accounting Policies [Line Items]        
Reimbursement rate       243.65
Product And Services Zio X T Service Code93247 | Minimum | Subsequent Event        
Summary Of Significant Accounting Policies [Line Items]        
Estimated reimbursement rate       247.59
Product And Services Zio X T Service Code93247 | Maximum | Subsequent Event        
Summary Of Significant Accounting Policies [Line Items]        
Estimated reimbursement rate       $ 334.46