Relocation And Severance Plan (Roll-forward Of The Accrued Liability) (Details) (USD $) In Thousands	6 Months Ended
	Jun. 30, 2011
Relocation Costs [Member]
Balance at December 31, 2010	$ 874
Costs incurred or charged to expense	120
Costs paid or settled	(963)
Balance at June 30, 2011	31
One-time Termination Benefits [Member]
Balance at December 31, 2010	31
Costs incurred or charged to expense	(1)
Costs paid or settled	(3)
Balance at June 30, 2011	$ 27