Retirement Benefits (Tables)

9 Months Ended

Mar. 31, 2012

Retirement Benefits [Abstract]

Components Of Net Periodic Benefit Cost

	Three Months Ended March 31,						Nine Months Ended March 31,
	2012			2011			2012			2011
Service cost	$	391		$	635		$	1,204		$	1,876
Interest cost		1,956			2,051			5,963			6,089
Expected return on plan assets		(60	)		(54	)		(179	)		(163	)
Amortization of prior service cost		352			352			1,055			1,055
Amortization of net loss		448			555			1,345			1,663
Net periodic benefit cost	$	3,087		$	3,539		$	9,388		$	10,520