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Commitments and Contingencies (Detail) - USD ($)
$ in Millions
Feb. 02, 2018
Dec. 11, 2017
Mar. 31, 2020
Dec. 31, 2019
Commitments and Contingencies Disclosure [Abstract]        
Fair value of guarantees under commercial and standby letters of credit     $ 2.8 $ 3.3
Settled Litigation        
Loss Contingencies [Line Items]        
Settlement amount   $ 11.7    
Pending Litigation        
Loss Contingencies [Line Items]        
Damages sought $ 11.7