XML 61 R48.htm IDEA: XBRL DOCUMENT v3.20.1
Leases - Additional Information (Detail)
 3 Months Ended
Mar. 31, 2020
USD ($)
Lessee Lease Description [Line Items]  
Operating lease, option to extend The lease term is defined as the noncancelable portion of the lease term plus any periods covered by an option to extend the lease if it is reasonably certain that the option will be exercised.
Operating lease, existence of option to extend true
Operating lease borrowing rate 6.50%
Operating lease payments related to option to extend lease term $ 108,000
Operating lease not yet commenced liability $ 0
Minimum [Member]  
Lessee Lease Description [Line Items]  
Operating lease remaining lease term 1 year
Maximum [Member]  
Lessee Lease Description [Line Items]  
Operating lease remaining lease term 3 years