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Accumulated Other Comprehensive Income (Tables)
 3 Months Ended
Jun. 30, 2018
Equity [Abstract]  
Components of accumulated other comprehensive income (loss)
The components of the Company's accumulated other comprehensive loss are as follows:
 
(In thousands)
June 30, 2018
 
March 31, 2018
Accumulated unrealized losses on available-for-sale securities, net of tax
$
(23,156
)
 
$
(29,844
)
Accumulated unrealized gains (losses) on hedging transactions, net of tax
(4,386
)
 
1,674

Accumulated cumulative translation adjustment, net of tax
(8,390
)
 
(6,339
)
Total accumulated other comprehensive loss
$
(35,932
)
 
$
(34,509
)