Commitments And Contingencies (Narrative) (Details) (USD $)		6 Months Ended
	Jun. 30, 2012	Dec. 31, 2012 Minimum [Member]	Dec. 31, 2012 Maximum [Member]
Commitments And Contingencies [Line Items]
Terminated employees severance compensation payment period		6 months	12 months
Contingent liability under employment contract agreements	$ 2,102,000