Quarterly report pursuant to Section 13 or 15(d)

Earnings Per Share - Additional Information (Detail)

v2.4.0.6
Earnings Per Share - Additional Information (Detail)
3 Months Ended 6 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2012
Dec. 31, 2011
Earnings Per Share Disclosure [Line Items]        
Number of potentially dilutive stock option shares excluded from the calculation of earnings per share 214,000 238,000 214,000 192,000