Quarterly report pursuant to Section 13 or 15(d)

Operating Leases - Additional Information (Detail)

v3.19.3
Operating Leases - Additional Information (Detail) - USD ($)
$ in Millions
Jan. 01, 2019
Sep. 30, 2019
Leases [Abstract]    
Operating lease right-of-use assets   $ 105.6
Operating lease right-of-use assets, accumulated amortization   $ 15.4
ROU assets and operating lease liabilities in connection with adoption of new lease standard $ 76.7  
Reclassification of prepaid rent and deferred rent to ROU assets in connection with adoption of new lease standard $ 7.8