Annual report pursuant to Section 13 and 15(d)

Subsequent Events - Additional Information (Detail)

v3.20.1
Subsequent Events - Additional Information (Detail) - shares
Feb. 03, 2020
Dec. 31, 2019
Dec. 31, 2018
Subsequent Event [Line Items]      
Shares authorized   200,000,000 200,000,000
Subsequent Event [Member]      
Subsequent Event [Line Items]      
Reverse Stock Split Conversion Ratio 1-for-10    
Subsequent Event [Member] | Before FebruaryThree 2020 [Member]      
Subsequent Event [Line Items]      
Shares authorized 200,000,000    
Subsequent Event [Member] | After FebruaryThree 2020 [Member]      
Subsequent Event [Line Items]      
Shares authorized 125,000,000