Annual report pursuant to Section 13 and 15(d)

Discontinued Operations- Additional Information (Detail)

v3.20.1
Discontinued Operations- Additional Information (Detail) - USD ($)
$ / shares in Units, $ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Jul. 03, 2018
Disposal Group, Including Discontinued Operation, Assets   $ 13,089  
Share Price     $ 3.04
Discontinued Operation, Gain (Loss) on Disposal of Discontinued Operation, Net of Tax $ 0 (13,469)  
National Holdings Corporation [Member]      
Disposal Group, Including Discontinued Operation, Assets   $ 13,100  
Share Price   $ 3.25  
Discontinued Operations [Member] | National Holdings Corporation [Member]      
Discontinued Operation, Gain (Loss) on Disposal of Discontinued Operation, Net of Tax   $ 2,300