Quarterly report pursuant to Section 13 or 15(d)

Amortizable Intangible Assets - Additional Information (Detail)

v3.19.2
Amortizable Intangible Assets - Additional Information (Detail) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2019
Jun. 30, 2018
Goodwill and Intangible Assets Disclosure [Abstract]        
Amortization of intangible assets $ 1.1 $ 1.5 $ 2.4 $ 3.0