Quarterly report pursuant to Section 13 or 15(d)

Share-Based Compensation - Additional Information (Detail)

v2.4.0.6
Share-Based Compensation - Additional Information (Detail) (USD $)
3 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Weighted average fair value of options granted during the period $ 11.85 $ 13.66
Total intrinsic value of options exercised $ 40,000 $ 34,000
Total fair value of options vested 55,000 71,000
Stock-based compensation cost 303,000 290,000
Total unrecognized compensation cost related to non-vested stock options $ 1,900,000  
Weighted average period over which the compensation cost is expected to be recognized 1 year 1 month 6 days