PENSION AND OTHER POSTRETIREMENT BENEFITS (Tables)

6 Months Ended

Sep. 30, 2017

Retirement Benefits [Abstract]

Schedule of Net Periodic Benefit Cost Not yet Recognized

The components of the Company's net periodic benefit cost were as follows:

	Pension Benefits
	Three Months Ended September 30,						Six Months Ended September 30,
	2017			2016			2017			2016
Service cost	$	116		$	120		$	232		$	240
Interest expense	1,063			1,176			2,126			2,352
Expected return on plan assets	(1,264		)	(1,403		)	(2,529		)	(2,806		)
Amortization of prior service cost	10			10			21			20
Actuarial loss	511			524			1,022			1,048
Net periodic pension cost	$	436		$	427		$	872		$	854

Schedule of Net Periodic Benefit Cost, Post Employment Benefits

	Other Postretirement Benefits
	Three Months Ended September 30,						Six Months Ended September 30,
	2017			2016			2017			2016
Service cost	$	3		$	3		$	7		$	6
Interest expense	85			67			169			134
Amortization of prior service cost	(178		)	(177		)	(355		)	(354		)
Actuarial loss	115			104			230			208
Net periodic pension cost (benefit)	$	25		$	(3	)	$	51		$	(6	)