Note 8. Pension and Other Postretirement Benefit Plans

The Company provides defined benefit pension and other postretirement plans to certain employees. Net periodic pension and other postretirement benefit cost for the plans included the following:

	Three months ended March 31,
	Pension						Other Postretirement
	2015			2014			2015			2014

Service cost	$	1,655		$	1,582		$	114		$	109
Interest cost		2,145			2,213			221			230
Expected return on plan assets		(2,470	)		(2,396	)		-			-
Amortization:
Prior service cost		(45	)		(52	)		(49	)		(21	)
Net actuarial loss (gain)		1,564			991			-			(49	)

Net benefit cost	$	2,849		$	2,338		$	286		$	269

	Six months ended March 31,
	Pension						Other Postretirement
	2015			2014			2015			2014

Service cost	$	3,310		$	3,164		$	228		$	218
Interest cost		4,290			4,426			442			460
Expected return on plan assets		(4,940	)		(4,792	)		-			-
Amortization:
Prior service cost		(90	)		(104	)		(98	)		(43	)
Net actuarial loss		3,128			1,982			-			(98	)

Net benefit cost	$	5,698		$	4,676		$	572		$	537

Benefit payments under the Company's principal retirement plan are made from plan assets, while benefit payments under the postretirement benefit plan are made from the Company's operating funds. Under IRS regulations, the Company is not required to make any significant contributions to its principal retirement plan in fiscal year 2015.

Contributions made and anticipated for fiscal year 2015 are as follows:

Contributions	Pension		Other Postretirement

Contributions during the six months ended March 31, 2015:
Supplemental retirement plan	$	362	$	-
Other postretirement plan		-		775

Additional contributions expected in fiscal 2015:
Supplemental retirement plan		371		-
Other postretirement plan		-		232