XML 40 R58.htm IDEA: XBRL DOCUMENT  v2.3.0.11
EARNINGS PER SHARE - Additional Information (Detail)
3 Months Ended 6 Months Ended
Jun. 30, 2011
Jun. 30, 2010
Jun. 30, 2011
Jun. 30, 2010
Earnings Per Share Disclosure [Line Items]        
Antidilutive Securities Excluded from Computation of Earnings Per Share 4,272,124 2,791,204 3,679,336 2,461,984