Annual report pursuant to Section 13 and 15(d)

Stock-Based Compensation (Details 2)

v2.4.0.6
Stock-Based Compensation (Details 2) (USD $)
12 Months Ended 0 Months Ended 12 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Mar. 31, 2013
Stock options
Mar. 31, 2012
Stock options
Mar. 31, 2011
Stock options
Mar. 31, 2013
Stock options
Maximum
Mar. 31, 2013
Stock options
Minimum
Mar. 31, 2013
Restricted Stock
Mar. 31, 2012
Restricted Stock
Mar. 04, 2010
Chief executive officer
Performance Vesting Stock Options
Mar. 31, 2013
Chief executive officer
Performance Vesting Stock Options
Mar. 31, 2006
Chief executive officer
Performance Vesting Stock Options
Mar. 31, 2013
Chief executive officer
Restricted Stock
Mar. 31, 2013
Board of directors
Restricted Stock
Mar. 31, 2012
Board of directors
Restricted Stock
Mar. 31, 2013
Executive leadership
Restricted Stock
Mar. 31, 2012
Executive leadership
Restricted Stock
Mar. 31, 2013
LTIP Plans
Mar. 31, 2013
2013/2014 LTIP
Restricted Stock
Stock-based Compensation                                      
Intrinsic value of options outstanding     $ 1,800,000                                
Intrinsic value of stock options exercisable     1,200,000                                
Total unrecognized compensation cost, net of estimated forfeitures, related to non-vested options     1,400,000                                
Weighted-average recognition period of unrecognized compensation costs     1 year 4 months 24 days                                
Weighted average exercise price of stock options expected to vest (in dollars per share)     $ 6.81 $ 9.07                              
Assumptions:                                      
Expected volatility (as a percent)     70.90% 83.20% 85.90%                            
Risk-free interest rate (as a percent)     0.50% 0.70% 1.00%                            
Expected option lives     4 years 4 years 1 month 6 days 4 years 1 month 6 days                            
Dividend rate (as a percent)     0.00%                                
Annual forfeiture rate (as a percent)     1.30%                                
Price of options granted as a percentage of fair value             100.00%                        
Awards exercised (in shares)     50,000                 166,667              
Weighted average exercise price of awards exercised (in dollars per share)     $ 2.18                 $ 24.15              
Life of options after vesting                     10 years                
Life of options after retirement                     3 years                
Number of awards voluntarily relinquished (in shares)                   83,333                  
Concurrent grant, replacement award (in shares)                   0                  
Consideration paid for awards relinquished                   0                  
Shares                                      
Non-vested restricted stock at the beginning of the period (in shares)               463,000                      
Granted (in shares)               109,000                      
Vested (in shares)               (116,000)                      
Forfeited (in shares)               (15,000)                      
Non-vested restricted stock at the end of the period (in shares)               441,000                      
Weighted-average Fair Value on Grant Date                                      
Non-vested restricted stock at the beginning of the period (in dollars per share) $ 4.09 $ 5.27           $ 8.25                      
Granted (in dollars per share)               $ 4.72                      
Vested (in dollars per share)               $ 8.98                      
Forfeited (in dollars per share)               $ 9.19                      
Non-vested restricted stock at the end of the period (in dollars per share) $ 4.09 $ 5.27           $ 7.15                      
Additional disclosures                                      
Vesting period           3 years 1 year             1 year 9 months   4 years   3 years
Portion of award that vests per year (as a percent)                                 25.00%    
Portion of award that vests after two years (as a percent)                               50.00%      
Portion of award that vests after three years (as a percent)                               50.00%      
Period of restriction for sale of shares                         90 days 90 days   90 days      
Unrecognized compensation costs               $ 1,800,000 $ 3,200,000                    
Performance period                                   2 years