Employee Benefit Plans (Tables)

6 Months Ended

Jun. 30, 2012

Employee Benefit Plans [Abstract]

Net periodic benefit costs for pension and post-retirement benefits plans

																	Chesapeake
	Chesapeake						FPU						Chesapeake				Postretirement					FPU
	Pension Plan						Pension Plan						SERP				Plan					Medical Plan
For the Three Months Ended June 30,	2012			2011			2012			2011			2012		2011		2012			2011		2012		2011
(in thousands)
Service Cost	$	—		$	—		$	—		$	—		$	—	$	—	$	—		$	—	$	40	$	27
Interest Cost		125			130			639			672			22		27		15			15		45		39
Expected return on plan assets		(109	)		(101	)		(657	)		(684	)		—		—		—			—		—		—
Amortization of prior service cost		(2	)		(2	)		—			—			5		5		(20	)		—		—		—
Amortization of net loss		85			39			44			—			12		9		17			—		22		5
Net periodic cost (benefit)		99			66			26			(12	)		39		41		12			15		107		71
Amortization of pre-merger regulatory asset		—			—			191			191			—		—		—			—		2		2
Total periodic cost	$	99		$	66		$	217		$	179		$	39	$	41	$	12		$	15	$	109	$	73
																	Chesapeake
	Chesapeake						FPU						Chesapeake				Postretirement					FPU
	Pension Plan						Pension Plan						SERP				Plan					Medical Plan
For the Six Months Ended June 30,	2012			2011			2012			2011			2012		2011		2012			2011		2012		2011
(in thousands)
Service Cost	$	—		$	—		$	—		$	—		$	—	$	—	$	—		$	—	$	80	$	53
Interest Cost		250			260			1,278			1,343			45		54		30			30		90		78
Expected return on plan assets		(218	)		(202	)		(1,315	)		(1,368	)		—		—		—			—		—		—
Amortization of prior service cost		(3	)		(3	)		—			—			10		10		(40	)		—		—		—
Amortization of net loss		170			78			88			—			23		19		35			—		45		10
Net periodic cost (benefit)		199			133			51			(25	)		78		83		25			30		215		141
Settlement expense		—			217			—			—			—		—		—			—		—		—
Amortization of pre-merger regulatory asset		—			—			381			381			—		—		—			—		4		4
Total periodic cost	$	199		$	350		$	432		$	356		$	78	$	83	$	25		$	30	$	219	$	145