Employee Benefit Plans: Employee Benefit Plans (Tables)

3 Months Ended

Mar. 31, 2015

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

Schedule of Net Benefit Costs

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

Schedule of Defined Benefit Plans Contributions

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