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Leases - Additional Information (Detail)
$ in Millions
3 Months Ended
Dec. 31, 2019
USD ($)
Oil and Gas Proppants [Member]  
Lessee Lease Description [Line Items]  
Impairment related to right of use assets $ 29.1
Minimum [Member]  
Lessee Lease Description [Line Items]  
Operating lease term 1 year
Maximum [Member]  
Lessee Lease Description [Line Items]  
Operating lease term 20 years