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Credit Facilities - Equipment Loan Facility (Detail) - RHI - Equipment Loan Facility - loan
 1 Months Ended
Sep. 05, 2017
Sep. 30, 2017
Oct. 29, 2022
Line Of Credit Facility [Line Items]      
Notes outstanding     1
Maximum      
Line Of Credit Facility [Line Items]      
Maturity term 4 years    
Minimum      
Line Of Credit Facility [Line Items]      
Maturity term   3 years