Accumulated Other Comprehensive Income (loss) (Table Text Block)

6 Months Ended

Sep. 30, 2018

Table Text Block Supplement [Abstract]

Summary of accumulated other comprehensive income (loss) components, net of tax

		Foreign Currency Translation		Unrealized Net Gain (Loss) on Investments		Fair Market Value of Cash Flow Hedges		Postretirement Benefit Obligation Net Loss		Accumulated Other Comprehensive Income (Loss)
		(Unaudited)
		(In thousands)
Balance as of March 31, 2018	$	(54,853)	$	52,509	$	(370)	$	(1,909)	$	(4,623)
Foreign currency translation		(980)		–		–		–		(980)
Unrealized net loss on investments		–		(57,273)		–		–		(57,273)
Change in fair value of cash flow hedges		–		–		1,283		–		1,283
Amounts reclassified from AOCI		–		–		(645)		–		(645)
Other comprehensive income (loss)		(980)		(57,273)		638		–		(57,615)
Balance as of September 30, 2018	$	(55,833)	$	(4,764)	$	268	$	(1,909)	$	(62,238)