Pension And Post-Retirement Benefit Costs (Tables)

3 Months Ended

Mar. 31, 2012

Pension And Post-Retirement Benefit Costs [Abstract]

Components Of Net Periodic Benefit Cost

	Three Months Ended March 31,
	Pension						Post-retirement Healthcare
	2012			2011			2012		2011
Service cost	$	254		$	257		$	2	$	4
Interest cost		647			680			185		209
Expected return on plan assets		(620	)		(569	)		—		—
Amortization of transition obligation		—			—			—		28
Amortization of prior service cost		74			74			21		47
Amortization of net loss		439			304			44		28
Net periodic benefit cost	$	794		$	746		$	252	$	316