Retirement Benefits (Schedule of estimated remaining cash contributions) (Details) (USD $) In Thousands	Jun. 30, 2011
Pension Costs [Member] | United States [Member]
Contributions	$ 1,290
Pension Costs [Member] | United Kingdom [Member]
Contributions	430
Pension Costs [Member] | Switzerland [Member]
Contributions	47
Other Postretirement Benefit Costs [Member]
Contributions	$ 178