XML 12 R33.htm IDEA: XBRL DOCUMENT v2.4.0.6
Common Stock and Stock-Based Compensation Plans (Details) (USD $)
In Thousands, except Share data, unless otherwise specified
 3 Months Ended
Jun. 30, 2012
Summary of stock option activity and related information  
Number of shares outstanding, Beginning balance 1,864,858
Number of shares, Granted 165,000
Number of shares, Exercised (7,615)
Number of shares, Forfeited or expired (3,447)
Number of shares outstanding, Ending balance 2,018,796
Weighted-average exercise price, Beginning Balance $ 15.79
Weighted-average exercise price, Granted $ 17.38
Weighted-average exercise price, Exercised $ 8.06
Weighted-average exercise price, Forfeited or expired $ 23.79
Weighted-average exercise price, Ending Balance $ 15.93
Weighted-average remaining contractual term, Ending Balance 4 years 10 months 24 days
Aggregate intrinsic value, Ending Balance $ 3,383,254
Number of shares, Exercisable 1,134,037
Weighted-average exercise price, Exercisable $ 11.84
Weighted-average remaining contractual term, Exercisable 3 years 8 months 12 days
Aggregate intrinsic value, Exercisable $ 6,548,109