XML 36 R35.htm IDEA: XBRL DOCUMENT v2.4.0.6
Restricted Stock Activity (Detail) (Restricted Stock, USD $)
In Thousands, except Per Share data, unless otherwise specified
6 Months Ended
Oct. 31, 2012
Restricted Stock
 
Restricted Stock Activity [Line Items]  
Shares, Non-vested, April 30,2012 1,781
Shares, Granted 841
Shares, Vested (728)
Shares, Forfeited/expired (17)
Shares, Non-vested, October 31,2012 1,877
Weighted-Average Grant Date Fair Value, Non-vested, April 30, 2012 $ 9.85
Weighted-Average Grant Date Fair Value, Granted $ 13.77
Weighted-Average Grant Date Fair Value, Vested $ 8.02
Weighted-Average Grant Date Fair Value, Forfeited/expired $ 17.03
Weighted-Average Grant Date Fair Value, Non-vested, October 31, 2012 $ 12.25