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Accumulated Other Income (Loss) Components Net of Tax (Table Text Block)
 9 Months Ended
Dec. 31, 2014
Table Text Block Supplement [Abstract]  
Summary of accumulated other comprehensive income (loss)
 
 
Foreign Currency Translation
 
Unrealized Net Gain on Investments
 
Fair Market Value of Cash Flow Hedges
 
Postretirement Benefit Obligation Net Loss
 
Accumulated Other Comprehensive Income (Loss)
 
 
(Unaudited)
 
 
(In thousands)
Balance at March 31, 2014
$
(39,287
 )$
5,991
$
(20,321
 )$
(306
 )$
(53,923
)
Foreign currency translation
 
(6,752
 ) 
-
 
-
 
-
 
(6,752
)
Unrealized net gain on investments
 
-
 
28,719
 
-
 
-
 
28,719
Change in fair value of cash flow hedges
 
-
 
-
 
(6,320
 ) 
-
 
(6,320
)
Amounts reclassified from AOCI
 
-
 
-
 
10,919
 
-
 
10,919
Other comprehensive income (loss)
 
(6,752
 ) 
28,719
 
4,599
 
-
 
26,566
Balance at December 31, 2014
$
(46,039
 )$
34,710
$
(15,722
 )$
(306
 )$
(27,357
)