Annual report pursuant to Section 13 and 15(d)

Income Taxes - Schedule of Activity Related to Unrecognized Tax Benefits (Detail)

v3.20.1
Income Taxes - Schedule of Activity Related to Unrecognized Tax Benefits (Detail) - USD ($)
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Income Tax Disclosure [Abstract]    
Gross unrecognized tax benefits at January 1, $ 0 $ 1,143,000
Gross increases (decreases) related to acquisitions 0 (1,143,000)
Gross increases related to current year tax positions 0 0
Gross unrecognized tax benefits at December 31, $ 0 $ 0