Annual report pursuant to Section 13 and 15(d)

National Holdings Corporation - Additional Information (Detail)

v3.6.0.2
National Holdings Corporation - Additional Information (Detail) - USD ($)
$ / shares in Units, $ in Thousands, shares in Millions
1 Months Ended 12 Months Ended
Sep. 30, 2016
Apr. 27, 2016
Dec. 31, 2016
Dec. 01, 2016
Sep. 09, 2016
Jun. 01, 2016
Dec. 31, 2015
Business Combination, Consideration Transferred     $ 22,872        
Common Stock Par Or Stated Value Per Share     $ 0.001 $ 2.03   $ 2.40 $ 0.001
Goodwill     $ 18,645       $ 0
National Holdings Corporation [Member]              
Business Acquisition, Percentage of Voting Interests Acquired 56.10% 56.00%     56.60%    
Business Acquisition, Share Price   $ 3.25     $ 3.25    
Number Of Shares Tendered   7          
Business Combination, Consideration Transferred $ 22,900 $ 22,900          
Common Stock Par Or Stated Value Per Share   $ 0.02     $ 0.02