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Common And Preferred Stock Common and Preferred Stock (Tables)
 12 Months Ended
Mar. 31, 2017
Schedule of Repurchases of Shares [Abstract]  
Schedule Of Repurchases Of Shares [Table Text Block]
Share repurchases under the programs for the fiscal years ended March 31, 2017, 2016, and 2015 were as follows:
 
Fiscal Year Ended March 31,
 
2017
 
2016
 
2015
Common Stock
 
 
 
 
 
Number of shares repurchased
—

 
—

 
719,993

Cost of shares repurchased (in thousands of dollars)
$
—

 
$
—

 
$
31,227

Weighted-average cost per share
$
—

 
$
—

 
$
43.37

 
 
 
 
 
 
Series B 6.75% Convertible Perpetual Preferred Stock
 
 
 
 
 
Number of shares repurchased
—

 
—

 
1,509

Cost of shares repurchased (in thousands of dollars)
$
—

 
$
—

 
$
1.497

Weighted-average cost per share
$
—

 
$
—

 
$
992.27