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Investment in Sublease (Details)
12 Months Ended
Dec. 31, 2022
Installment
Dec. 31, 2018
USD ($)
Sep. 30, 2018
USD ($)
Sep. 30, 2017
USD ($)
Apr. 30, 2016
USD ($)
Capital Leases of Lessee [Abstract]          
Sales price     $ 2,447,000    
NYU [Member]          
Capital Leases of Lessee [Abstract]          
Purchase price of gamma knife equipment       $ 2,400,000  
Number of monthly installments | Installment 41        
Monthly lease payment       50,000  
Final lease payment amount       $ 350,000  
NYU [Member] | Gamma Knife Cobalt Reload [Member]          
Capital Leases of Lessee [Abstract]          
Monthly lease payment   $ 50,000      
Cobalt reload cost   1,503,000      
NYU [Member] | ICON Imaging Technology [Member]          
Capital Leases of Lessee [Abstract]          
Monthly lease payment   30,000     $ 30,000
Final lease payment amount   350,000      
Total final lease payment   $ 380,000