Employee Benefit Plans (Tables)

3 Months Ended

Mar. 31, 2016

Compensation and Retirement Disclosure [Abstract]

Employee Benefit Plans

	Chesapeake Pension Plan						FPU Pension Plan						Chesapeake SERP				Chesapeake Postretirement Plan						FPU Medical Plan
For the Three Months Ended March 31,	2016			2015			2016			2015			2016		2015		2016			2015			2016		2015
(in thousands)
Interest cost	$	105		$	102		$	630		$	626		$	23	$	23	$	11		$	11		$	14	$	15
Expected return on plan assets	(131		)	(135		)	(701		)	(777		)	—		—		—			—			—		—
Amortization of prior service cost	—			—			—			—			—		2		(20		)	(19		)	—		—
Amortization of net loss	104			90			128			114			22		25		18			17			—		2
Net periodic cost (benefit)	78			57			57			(37		)	45		50		9			9			14		17
Amortization of pre-merger regulatory asset	—			—			191			190			—		—		—			—			2		2
Total periodic cost	$	78		$	57		$	248		$	153		$	45	$	50	$	9		$	9		$	16	$	19

For the Three Months Ended March 31, 2016	Chesapeake Pension Plan		FPU Pension Plan		Chesapeake SERP		Chesapeake Postretirement Plan			FPU Medical Plan		Total
(in thousands)
Prior service cost (credit)	$	—	$	—	$	—	$	(20	)	$	—	$	(20	)
Net loss	104		128		22		18			—		272
Total recognized in net periodic benefit cost	$	104	$	128	$	22	$	(2	)	$	—	$	252
Recognized from accumulated other comprehensive loss (1)	$	104	$	24	$	22	$	(2	)	$	—	$	148
Recognized from regulatory asset	—		104		—		—			—		104
Total	$	104	$	128	$	22	$	(2	)	$	—	$	252

For the Three Months Ended March 31, 2015	Chesapeake Pension Plan		FPU Pension Plan		Chesapeake SERP		Chesapeake Postretirement Plan			FPU Medical Plan		Total
(in thousands)
Prior service cost (credit)	$	—	$	—	$	2	$	(19	)	$	—	$	(17	)
Net loss	90		114		25		17			2		248
Total recognized in net periodic benefit cost	$	90	$	114	$	27	$	(2	)	$	2	$	231
Recognized from accumulated other comprehensive loss (1)	$	90	$	22	$	27	$	(2	)	$	—	$	137
Recognized from regulatory asset	—		92		—		—			2		94
Total	$	90	$	114	$	27	$	(2	)	$	2	$	231