Retirement Agreements And Other Postretirement Benefits (Tables)

6 Months Ended

Jun. 30, 2012

Retirement Agreements And Other Postretirement Benefits [Abstract]

Components Of Net Periodic Benefits Cost

	For the Three Months Ended June 30,				For the Six Months Ended June 30,
	2012		2011		2012		2011
Service cost – benefits earned during the year	$	3,154	$	6,425	$	6,308	$	12,849
Interest cost on the projected benefit obligation		6,967		7,689		13,934		15,378
Amortization of unrecognized prior service cost		2,349		5,097		4,698		10,194
Amortization of unrecognized gains		170		643		340		1,286
Net periodic benefits costs	$	12,640	$	19,854	$	25,280	$	39,707