Employee Benefit Plans (Tables)

9 Months Ended

Sep. 30, 2015

Compensation and Retirement Disclosure [Abstract]

Employee Benefit Plans

For the Three Months Ended September 30, 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	91		114		25		17			2		249
Total recognized in net periodic benefit cost	$	91	$	114	$	27	$	(2	)	$	2	$	232
Recognized from accumulated other comprehensive loss (1)	$	91	$	22	$	27	$	(2	)	$	—	$	138
Recognized from regulatory asset	—		92		—		—			2		94
Total	$	91	$	114	$	27	$	(2	)	$	2	$	232

For the Nine Months Ended September 30, 2015	Chesapeake Pension Plan		FPU Pension Plan		Chesapeake SERP		Chesapeake Postretirement Plan			FPU Medical Plan		Total
(in thousands)
Prior service cost (credit)	$	—	$	—	$	8	$	(58	)	$	—	$	(50	)
Net loss	272		341		74		53			5		745
Total recognized in net periodic benefit cost	$	272	$	341	$	82	$	(5	)	$	5	$	695
Recognized from accumulated other comprehensive loss (1)	$	272	$	65	$	82	$	(5	)	$	1	$	415
Recognized from regulatory asset	—		276		—		—			4		280
Total	$	272	$	341	$	82	$	(5	)	$	5	$	695

For the Three Months Ended September 30, 2014	Chesapeake Pension Plan		FPU Pension Plan		Chesapeake SERP		Chesapeake Postretirement Plan			FPU Medical Plan		Total
(in thousands)
Prior service cost (credit)	$	—	$	—	$	5	$	(19	)	$	—	$	(14	)
Net loss	37		—		12		16			—		65
Total recognized in net periodic benefit cost	$	37	$	—	$	17	$	(3	)	$	—	$	51
Recognized from accumulated other comprehensive loss (1)	$	37	$	—	$	17	$	(3	)	$	—	$	51
Recognized from regulatory asset	—		—		—		—			—		—
Total	$	37	$	—	$	17	$	(3	)	$	—	$	51

For the Nine Months Ended September 30, 2014	Chesapeake Pension Plan		FPU Pension Plan		Chesapeake SERP		Chesapeake Postretirement Plan			FPU Medical Plan		Total
(in thousands)
Prior service cost (credit)	$	—	$	—	$	14	$	(58	)	$	—	$	(44	)
Net loss	112		—		36		50			—		198
Total recognized in net periodic benefit cost	$	112	$	—	$	50	$	(8	)	$	—	$	154
Recognized from accumulated other comprehensive loss (1)	$	112	$	—	$	50	$	(8	)	$	—	$	154
Recognized from regulatory asset	—		—		—		—			—		—
Total	$	112	$	—	$	50	$	(8	)	$	—	$	154

	Chesapeake Pension Plan						FPU Pension Plan						Chesapeake SERP				Chesapeake Postretirement Plan						FPU Medical Plan
For the Three Months Ended September 30,	2015			2014			2015			2014			2015		2014		2015			2014			2015		2014
(in thousands)
Interest cost	$	102		$	107		$	626		$	647		$	23	$	23	$	11		$	13		$	15	$	17
Expected return on plan assets	(135		)	(133		)	(777		)	(773		)	—		—		—			—			—		—
Amortization of prior service cost	—			—			—			—			2		5		(19		)	(19		)	—		—
Amortization of net loss	91			37			114			—			25		12		17			16			2		—
Net periodic cost (benefit)	58			11			(37		)	(126		)	50		40		9			10			17		17
Amortization of pre-merger regulatory asset	—			—			191			191			—		—		—			—			2		2
Total periodic cost	$	58		$	11		$	154		$	65		$	50	$	40	$	9		$	10		$	19	$	19

	Chesapeake Pension Plan						FPU Pension Plan						Chesapeake SERP				Chesapeake Postretirement Plan						FPU Medical Plan
For the Nine Months Ended September 30,	2015			2014			2015			2014			2015		2014		2015			2014			2015		2014
(in thousands)
Interest cost	$	306		$	320		$	1,877		$	1,941		$	68	$	69	$	33		$	39		$	45	$	50
Expected return on plan assets	(405		)	(398		)	(2,330		)	(2,318		)	—		—		—			—			—		—
Amortization of prior service cost	—			—			—			—			8		14		(58		)	(58		)	—		—
Amortization of net loss	272			112			341			—			74		36		53			50			5		—
Net periodic cost (benefit)	173			34			(112		)	(377		)	150		119		28			31			50		50
Amortization of pre-merger regulatory asset	—			—			571			571			—		—		—			—			6		6
Total periodic cost	$	173		$	34		$	459		$	194		$	150	$	119	$	28		$	31		$	56	$	56