Quarterly report pursuant to Section 13 or 15(d)

Amortizable Intangible Assets - Additional Information (Detail)

v3.19.1
Amortizable Intangible Assets - Additional Information (Detail) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract]    
Amortization of intangible assets $ 1.3 $ 1.5