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Accumulated Other Comprehensive Income (Loss) (Tables)
9 Months Ended
Dec. 31, 2018
Accumulated Other Comprehensive Income (Loss) [Abstract]  
Accumulated Other Comprehensive Income (Loss)
The following summarizes changes in accumulated other comprehensive income (loss):

  
Three Months Ended December 31, 2018
  
Three Months Ended December 31, 2017
 
  
Unrealized
Gain
on Short-Term
Investments
  
Foreign
Currency
Translation
  
Total
  
Unrealized
Gain (Loss)
on Short-Term
Investments
  
Foreign
Currency
Translation
  
Total
 
Balance at September 30, 2018 and 2017
 
$
-
  
$
(6,891,000
)
 
$
(6,891,000
)
 
$
644,000
  
$
(7,132,000
)
 
$
(6,488,000
)
Other comprehensive income (loss), net of tax
  
-
   
(302,000
)
  
(302,000
)
  
83,000
   
247,000
   
330,000
 
Amounts reclassified from accumulated other comprehensive loss, net of tax
  
-
   
-
   
-
   
-
   
-
   
-
 
Balance at December 31, 2018 and 2017
 
$
-
  
$
(7,193,000
)
 
$
(7,193,000
)
 
$
727,000
  
$
(6,885,000
)
 
$
(6,158,000
)

    
Nine Months Ended December 31, 2018
  
Nine Months Ended December 31, 2017
 
Unrealized
Gain
on Short-Term
Investments
  
Foreign
Currency
Translation
  
Total
  
Unrealized
Gain
on Short-Term
Investments
  
Foreign
Currency
Translation
  
Total
 
Balance at March 31, 2018 and 2017
 
$
746,000
  
$
(6,174,000
)
 
$
(5,428,000
)
 
$
528,000
  
$
(7,969,000
)
 
$
(7,441,000
)
Cumulative-effect adjustment [see Note 3]
  
(746,000
)
  
-
   
(746,000
)
  
-
   
-
   
-
 
Balance at April 1, 2018 and 2017
 
$
-
  
$
(6,174,000
)
 
$
(6,174,000
)
 
$
528,000
  
$
(7,969,000
)
 
$
(7,441,000
)
Other comprehensive (loss) income, net of tax
  
-
   
(1,019,000
)
  
(1,019,000
)
  
199,000
   
1,084,000
   
1,283,000
 
Amounts reclassified from accumulated other comprehensive loss, net of tax
  
-
   
-
   
-
   
-
   
-
   
-
 
Balance at December 31, 2018 and 2017
 
$
-
  
$
(7,193,000
)
 
$
(7,193,000
)
 
$
727,000
  
$
(6,885,000
)
 
$
(6,158,000
)