XML 47 R65.htm IDEA: XBRL DOCUMENT v2.4.0.8
Stock Repurchase Program - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified
0 Months Ended 3 Months Ended
May 08, 2013
Jun. 30, 2013
Sep. 30, 2013
Subsequent Event [Member]
Schedule Of Share Repurchase Programs [Line Items]      
Share repurchase program, authorized amount $ 50    
Stock repurchased amount   $ 26.9 $ 12.6