FAIR VALUE MEASUREMENTS (Tables)

3 Months Ended

Jun. 30, 2017

Fair Value Disclosures [Abstract]

Schedule of Fair Value Assets and Liabilities Measured on Recurring Basis

The following table provides the fair value hierarchy for the supplemental plan assets measured at fair value as of June 30, 2017:

							Significant		Significant
				Quoted prices in			observable		unobservable		Measured at
				active markets			inputs		inputs		Net Asset
(In thousands)	Total			(Level 1)			(Level 2)		(Level 3)		Value
Equity securities	$	5,121			5,121			—		—		—
Debt securities		3,386			853			858		—		1,675
Cash and cash equivalents		240			32			170		—		38
Total	$	8,747			6,006			1,028		—		1,713
Other pending transactions		(25	)		(25	)		—		—		—
Total fair value of plan assets	$	8,722			5,981			1,028		—		1,713

The following table provides the fair value hierarchy for the plan assets measured at fair value as of March 31, 2017:

					Significant		Significant
			Quoted prices in		observable		unobservable		Measured at
			active markets		inputs		inputs		Net Asset
(In thousands)	Total		(Level 1)		(Level 2)		(Level 3)		Value
Equity securities	$	5,176		5,176		—		—		—
Debt securities		3,261		832		781		—		1,648
Cash and cash equivalents		323		15		236		—		72
Total	$	8,760		6,023		1,017		—		1,720
Other pending transactions		—		—		—		—		—
Total fair value of plan assets	$	8,760		6,023		1,017		—		1,720

Schedule of Fair Value Other Financial Instruments Measured

The following table provides the fair value hierarchy for the company’s other financial instruments measured as of June 30, 2017:

					Significant		Significant
			Quoted prices in		observable		unobservable
			active markets		inputs		inputs
(In thousands)	Total		(Level 1)		(Level 2)		(Level 3)
Cash equivalents	$	648,913		648,913		—		—
Total fair value of assets	$	648,913		648,913		—		—

The following table provides the fair value hierarchy for the company’s other financial instruments measured as of March 31, 2017:

					Significant		Significant
			Quoted prices in		observable		unobservable
			active markets		inputs		inputs
(In thousands)	Total		(Level 1)		(Level 2)		(Level 3)
Cash equivalents	$	664,412		664,412		—		—
Total fair value of assets	$	664,412		664,412		—		—