Retirement Benefit Plans (Summary Of Net Periodic Benefit Costs) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011	Dec. 31, 2012
Retirement Benefit Plans [Abstract]
Service cost	$ 23	$ 13	$ 46	$ 24
Interest cost	17	46	35	95
Amortization of actuarial loss	1	1	2	2
Net periodic benefit cost	41	60	83	121
Expected expense to be recognized					165
Expected contributions to forgoing plans	206		206
Contributions to plans			$ 103