Three Months

Nine Months

For the Periods Ended March 31

2014

2013

2014

2013

Service cost – benefits earned during the period

$

535

$

768

$

1,843

$

2,046

Interest cost on benefit obligation

532

537

1,750

1,543

Expected return on plan assets

(476

)

(500

)

(1,751

)

(1,602

)

Amortization of net actuarial (gain) loss and prior service costs

249

436

678

1,054

Net periodic pension expense

$

840

$

1,241

$

2,520

$

3,041