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Components of Net Periodic Benefit Cost
 3 Months Ended
Mar. 31, 2017
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]  
Components of Net Periodic Benefit Cost
Components of Net Periodic Benefit Cost
 
Prior to January 1, 1999, we maintained a defined benefit pension plan for which most of our employees were eligible (the "Qualified Pension Plan"). We elected to freeze benefits under the Qualified Pension Plan as of December 31, 1998.

In 1994, we adopted a non-qualified, unfunded, supplemental pension plan (the "Restoration Pension Plan") covering certain employees, which provides for incremental pension payments so that total pension payments equal those amounts that would have been payable from our Qualified Pension Plan were it not for limitations imposed by income tax regulation. The Restoration Pension Plan was intended to provide benefits equivalent to our Qualified Pension Plan as if such plan had not been frozen. We elected to freeze benefits under the Restoration Pension Plan as of April 1, 2014.

Net pension cost for both plans included the following components:
 
 
Three Months Ended March 31,
In thousands
 
2017
 
2016
Interest cost
 
$
1,837

 
$
1,950

Expected return on plan assets
 
(1,832
)
 
(2,061
)
Recognized actuarial loss
 
688

 
597

Net periodic benefit cost
 
$
693

 
$
486



We are not required to make, and do not intend to make, any contributions to our Qualified Pension Plan in 2017. Based on current estimates we will not be required to make any contributions to our Qualified Pension Plan until the 2018 plan year.

We are not required to make, and do not intend to make, any contributions to our Restoration Pension Plan other than to the extent needed to cover benefit payments. We made benefit payments under this supplemental plan of $0.4 million in the three months ended March 31, 2017.