Components of Net Periodic Benefit Cost (Tables)

3 Months Ended

Mar. 31, 2014

Compensation and Retirement Disclosure [Abstract]

Schedule of Net Benefit Costs

	Three Months Ended March 31,
	(000's)
	Pension Benefits						Post-Retirement Health Benefits
	2014			2013			2014		2013
Service cost	$	510		$	559		$	13	$	17
Interest cost	939			846			44		43
Expected return on plan assets	(948		)	(827		)	—		—
Amortization of transition obligation	—			—			—		15
Net amortization of prior service cost	(2		)	(4		)	—		—
Net amortization of net (gain) loss	190			523			—		—
Net Periodic Benefit Cost	$	689		$	1,097		$	57	$	75