Quarterly report pursuant to Section 13 or 15(d)

Legal Proceedings - Additional Information (Detail)

v2.4.0.8
Legal Proceedings - Additional Information (Detail) (USD $)
0 Months Ended 1 Months Ended 9 Months Ended
Oct. 11, 2013
Dec. 31, 2013
Nov. 30, 2013
Aug. 31, 2014
Ki Yong Choi [Member]
May 26, 2011
Minimum [Member]
Schedule Of Members Equity [Line Items]          
Jurisdictional amount of the court         $ 75,000
Settlement fee paid   525,000      
Accrual expenses     525,000    
Shareholder derivative complaint date       Nov. 13, 2013  
Minimum jurisdictional amount $ 75,000