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COMPREHENSIVE INCOME (Tables)
9 Months Ended
Dec. 31, 2011
Statement of Income and Comprehensive Income [Abstract]  
Schedule of Comprehensive Income [Table Text Block]
The components of comprehensive income for the three and nine months ended December 31, 2011 and 2010 are as follows:
 
 
Three Months Ended
 
Nine Months Ended
 
 
December 31,
 
December 31,
(in thousands)
 
2011
 
2010
 
2011
 
2010
Net income
 
$
30,898

 
$
31,552

 
$
85,150

 
$
82,927

Unrealized gain (loss) on cash flow hedges, net of tax
 
2,078

 
1,124

 
6,112

 
(2,890
)
Foreign currency translation gain (loss), net of tax
 
(535
)
 
(227
)
 
(942
)
 
495

Unrealized gain (loss) on investments, net of tax
 
56

 
(10
)
 
(112
)
 
32

Comprehensive income
 
$
32,497

 
$
32,439

 
$
90,208

 
$
80,564