Quarterly report pursuant to Section 13 or 15(d)

Soft Dollar Arrangements - Additional Information (Detail)

v3.20.2
Soft Dollar Arrangements - Additional Information (Detail) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Soft Dollar Arrangements [Abstract]        
Soft dollar credits $ 272 $ 152 $ 427 $ 345