Benefit Plans Level 3 (Tables)

6 Months Ended

Sep. 30, 2015

Defined Benefit Plan Disclosure [Line Items]

Schedule of Defined Benefit Plans Disclosures [Table Text Block]

Components of the net periodic benefit cost for our defined benefit pension plans and other postretirement medical benefits plan were as follows:

	Defined Benefit Pension Plans						Other Postretirement Benefits Plan
Three Months Ended September 30,	2015			2014			2015			2014
Service cost	$	11		$	35		$	—		$	—
Interest cost	224			471			148			173
Expected return on plan assets	(403		)	(785		)	—			—
Amortization of loss	241			277			207			180
Settlement	26,515			—			—			—
Amortization of prior service cost	—			—			(815		)	(816		)
Net periodic benefit cost	$	26,588		$	(2	)	$	(460	)	$	(463	)

	Defined Benefit Pension Plans						Other Postretirement Benefits Plan
Six Months Ended September 30,	2015			2014			2015			2014
Service cost	$	27		$	70		$	—		$	—
Interest cost	560			944			296			346
Expected return on plan assets	(1,008		)	(1,570		)	—			—
Amortization of loss	602			553			414			360
Settlement	26,515			—			—			—
Amortization of prior service cost	—			—			(1,631		)	(1,631		)
Net periodic benefit cost	$	26,696		$	(3	)	$	(921	)	$	(925	)