Annual report pursuant to section 13 and 15(d)

Summary of Significant Accounting Policies - Additional Information (Detail)

v2.4.0.6
Summary of Significant Accounting Policies - Additional Information (Detail)
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Summary Of Significant Accounting Policies [Line Items]    
Weighted average number diluted shares outstanding adjustment 3,288,156 2,053,322