Employee Benefit Plans:

3 Months Ended

Mar. 31, 2015

Defined Benefit Pension Plans and Defined Benefit Postretirement Plans Disclosure [Abstract]

Employee Benefit Plans Disclosure

EMPLOYEE BENEFIT PLANS

Defined Benefit Pension Plan

The components of net periodic benefit cost for the Defined Benefit Pension Plan were as follows (in thousands):

	Three Months Ended March 31,
	2015			2014
Service cost	$	199		$	176
Interest cost	739			748
Expected return on plan assets	(984		)	(926		)
Prior service cost	11			11
Net loss (gain)	549			235
Net periodic benefit cost	$	514		$	244

Defined Benefit Postretirement Healthcare Plan

The components of net periodic benefit cost for the Defined Benefit Postretirement Healthcare Plan were as follows (in thousands):

	Three Months Ended March 31,
	2015			2014
Service cost	$	58		$	56
Interest cost	54			60
Prior service cost (benefit)	(84		)	(84		)
Net loss (gain)	—			—
Net periodic benefit cost	$	28		$	32

Supplemental Non-qualified Defined Benefit Plans

The components of net periodic benefit cost for the Supplemental Non-qualified Defined Benefit Plans were as follows (in thousands):

	Three Months Ended March 31,
	2015		2014
Interest cost	$	36	$	37
Net loss (gain)	23		11
Net periodic benefit cost	$	59	$	48

Contributions

We anticipate we will make contributions to the benefit plans during 2015 and 2016. Contributions to the Defined Benefit Pension Plan are cash contributions made directly to the Pension Plan Trust accounts. Contributions to the Healthcare and Supplemental Plans are made in the form of benefit payments. Contributions and anticipated contributions are as follows (in thousands):

	Contributions Three Months Ended March 31, 2015		Remaining Anticipated Contributions for 2015		Anticipated Contributions for 2016
Defined Benefit Pension Plan	$	—	$	1,657	$	1,657
Defined Benefit Postretirement Healthcare Plan	$	130	$	389	$	577
Supplemental Non-qualified Defined Benefit Plans	$	54	$	163	$	184