Annual report pursuant to Section 13 and 15(d)

Subsequent Events - Additional Information (Detail)

v3.20.1
Subsequent Events - Additional Information (Detail) - Subsequent Events [Member] - Merger Agreement [Member]
Jan. 28, 2020
USD ($)
Subsequent Event [Line Items]  
Termination fee $ 500,000
Maximum [Member]  
Subsequent Event [Line Items]  
Reimburse the other party’s expenses $ 350,000