Retirement Benefits (Tables)

6 Months Ended

Dec. 31, 2011

Retirement Benefits [Abstract]

Components Of Net Periodic Benefit Cost

	Three Months Ended December 31,						Six Months Ended December 31,
	2011			2010			2011			2010
Service cost	$	398		$	634		$	813		$	1,241
Interest cost		1,982			2,040			4,007			4,038
Expected return on plan assets		(58	)		(55	)		(119	)		(109	)
Amortization of prior service cost		351			351			703			703
Amortization of net loss		449			554			897			1,108
Net periodic benefit cost	$	3,122		$	3,524		$	6,301		$	6,981