Employee Benefit Plans (Tables)

6 Months Ended

Jun. 30, 2015

Compensation and Retirement Disclosure [Abstract]

Employee Benefit Plans

For the Three Months Ended June 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 Six Months Ended June 30, 2015	Chesapeake Pension Plan		FPU Pension Plan		Chesapeake SERP		Chesapeake Postretirement Plan			FPU Medical Plan		Total
(in thousands)
Prior service cost (credit)	$	—	$	—	$	5	$	(39	)	$	—	$	(34	)
Net loss	181		227		50		35			3		496
Total recognized in net periodic benefit cost	$	181	$	227	$	55	$	(4	)	$	3	$	462
Recognized from accumulated other comprehensive loss (1)	$	181	$	43	$	55	$	(4	)	$	1	$	276
Recognized from regulatory asset	—		184		—		—			2		186
Total	$	181	$	227	$	55	$	(4	)	$	3	$	462

For the Three Months Ended June 30, 2014	Chesapeake Pension Plan		FPU Pension Plan		Chesapeake SERP		Chesapeake Postretirement Plan			FPU Medical Plan		Total
(in thousands)
Prior service cost (credit)	$	—	$	—	$	5	$	(20	)	$	—	$	(15	)
Net loss	38		—		12		17			—		67
Total recognized in net periodic benefit cost	$	38	$	—	$	17	$	(3	)	$	—	$	52
Recognized from accumulated other comprehensive loss (1)	$	38	$	—	$	17	$	(3	)	$	—	$	52
Recognized from regulatory asset	—		—		—		—			—		—
Total	$	38	$	—	$	17	$	(3	)	$	—	$	52

For the Six Months Ended June 30, 2014	Chesapeake Pension Plan		FPU Pension Plan		Chesapeake SERP		Chesapeake Postretirement Plan			FPU Medical Plan		Total
(in thousands)
Prior service cost (credit)	$	—	$	—	$	9	$	(39	)	$	—	$	(30	)
Net loss	75		—		24		33			—		132
Total recognized in net periodic benefit cost	$	75	$	—	$	33	$	(6	)	$	—	$	102
Recognized from accumulated other comprehensive loss (1)	$	75	$	—	$	33	$	(6	)	$	—	$	102
Recognized from regulatory asset	—		—		—		—			—		—
Total	$	75	$	—	$	33	$	(6	)	$	—	$	102

	Chesapeake Pension Plan						FPU Pension Plan						Chesapeake SERP				Chesapeake Postretirement Plan						FPU Medical Plan
For the Three Months Ended June 30,	2015			2014			2015			2014			2015		2014		2015			2014			2015		2014
(in thousands)
Interest cost	$	102		$	106		$	626		$	647		$	23	$	23	$	11		$	13		$	15	$	16
Expected return on plan assets	(135		)	(132		)	(777		)	(772		)	—		—		—			—			—		—
Amortization of prior service cost	—			—			—			—			2		5		(19		)	(20		)	—		—
Amortization of net loss	91			38			114			—			25		12		17			17			2		—
Net periodic cost (benefit)	58			12			(37		)	(125		)	50		40		9			10			17		16
Amortization of pre-merger regulatory asset	—			—			191			191			—		—		—			—			2		2
Total periodic cost	$	58		$	12		$	154		$	66		$	50	$	40	$	9		$	10		$	19	$	18

	Chesapeake Pension Plan						FPU Pension Plan						Chesapeake SERP				Chesapeake Postretirement Plan						FPU Medical Plan
For the Six Months Ended June 30,	2015			2014			2015			2014			2015		2014		2015			2014			2015		2014
(in thousands)
Interest cost	$	204		$	213		$	1,251		$	1,294		$	46	$	46	$	22		$	26		$	30	$	33
Expected return on plan assets	(270		)	(265		)	(1,554		)	(1,545		)	—		—		—			—			—		—
Amortization of prior service cost	—			—			—			—			5		9		(39		)	(39		)	—		—
Amortization of net loss	181			75			227			—			50		24		35			33			3		—
Net periodic cost (benefit)	115			23			(76		)	(251		)	101		79		18			20			33		33
Amortization of pre-merger regulatory asset	—			—			381			381			—		—		—			—			4		4
Total periodic cost	$	115		$	23		$	305		$	130		$	101	$	79	$	18		$	20		$	37	$	37