Annual report pursuant to Section 13 and 15(d)

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Identified intangible assets (Details)

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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Identified intangible assets (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Indefinite-lived intangible assets    
Impairment charge of intangible assets $ 117,000  
Amortization expense 3,500 $ 466
Tradenames    
Indefinite-lived intangible assets    
Impairment charge of intangible assets $ 117 $ 0
Doctor Agreements    
Finite-lived intangible assets    
Estimated useful life 1 year 10 years
Doctor Agreements | Intangible Assets, Amortization Period    
Indefinite-lived intangible assets    
Amortization expense $ 3,100  
Noncompete Agreements    
Finite-lived intangible assets    
Estimated useful life 2 years