Annual report pursuant to Section 13 and 15(d)

Acquisitions - Pro Forma Financial Information (Detail)

v3.8.0.1
Acquisitions - Pro Forma Financial Information (Detail) - USD ($)
$ / shares in Units, $ in Thousands
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Business Combinations [Abstract]    
Total revenue $ 763,534 $ 703,654
Net loss $ (5,254) $ (16,570)
Net (loss) income per share attributable to common stockholders    
Basic and diluted net income (in dollars per share) $ (0.07) $ (0.22)