Quarterly report pursuant to Section 13 or 15(d)

Description of Business and Basis of Presentation - Additional Information (Detail)

v3.20.1
Description of Business and Basis of Presentation - Additional Information (Detail)
3 Months Ended
Mar. 31, 2020
Office
Class of Stock [Line Items]  
Number of offices in the United States and Canada 82
Formation date 2013-06
Percentage of common stock distributed 80.00%
IPO MMI [Member]  
Class of Stock [Line Items]  
IPO completion date Nov. 05, 2013