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

6 Months Ended

Sep. 30, 2019

Table Text Block Supplement [Abstract]

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

		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, 2019	$	(56,612)	$	(7,259)	$	107	$	(2,934)	$	(66,698)
Foreign currency translation		3,611		0		0		0		3,611
Unrealized net gain on investments		0		82,093		0		0		82,093
Change in fair value of cash flow hedges		0		0		(1,534)		0		(1,534)
Amounts reclassified into earnings on hedging activities						(321)				(321)
Other comprehensive income (loss)		3,611		82,093		(1,855)		0		83,849
Balance at September 30, 2019	$	(53,001)	$	74,834	$	(1,748)	$	(2,934)	$	17,151