Quarterly report pursuant to Section 13 or 15(d)

Earnings (Loss) Per Share - Additional Information (Detail)

v2.4.0.6
Earnings (Loss) Per Share - Additional Information (Detail)
3 Months Ended 9 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2012
Sep. 30, 2011
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 0 0 0 25,816