Pension and Postretirement Benefits (Tables)

6 Months Ended

Sep. 30, 2014

Pension and Other Postretirement Benefit Expense [Abstract]

Schedule of Net Periodic Benefit Cost Not yet Recognized

Net periodic pension cost for continuing operations consisted of the following:

	Three Months Ended September 30,						Six Months Ended September 30,
	2014			2013			2014			2013
Service cost	$	510		$	530		1,020			$	1,078
Interest expense	1,694			1,662			3,387			3,383
Expected return on plan assets	(1,677		)	(1,519		)	(3,354		)	(3,037		)
Amortization of prior service cost	49			49			97			102
Actuarial loss	557			760			1,114			1,517
Curtailment loss	—			—			—			77
Special termination benefit	—			—			—			1,184
Net periodic pension cost	$	1,133		$	1,482		$	2,264		$	4,304

Schedule of Net Periodic Benefit Cost, Post Employment Benefits

Net periodic benefit cost for postretirement health and life insurance benefit plans consisted of the following:

	Three Months Ended September 30,						Six Months Ended September 30,
	2014			2013			2014			2013
Service cost	$	10		$	17		21			$	33
Interest expense	134			142			268			284
Amortization of prior service cost	(303		)	(410		)	(606		)	(820		)
Actuarial loss	111			123			222			246
Net periodic pension (benefit)	$	(48	)	$	(128	)	$	(95	)	$	(257	)