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Stock-Based Compensation - Schedule of Grants (Details)
Mar. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Stock Options Outstanding (in shares) 319,746
RSA's (Restricted Stock Awards) outstanding 153,825
Awards Exercised 1,281,779
Available Shares 2,780,595
Authorized Shares 4,535,945
2010 ECP
 
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Stock Options Outstanding (in shares) 285,998
RSA's (Restricted Stock Awards) outstanding 46,095
Awards Exercised 1,035,000
Available Shares 2,168,852
Authorized Shares 3,535,945
2005 LTIP
 
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Stock Options Outstanding (in shares) 33,748
RSA's (Restricted Stock Awards) outstanding 107,730
Awards Exercised 246,779
Available Shares 611,743
Authorized Shares 1,000,000