Income Taxes (Schedule Of Accrued Liability For Unrecognized Tax Benefit) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Reconciliation of Unrecognized Tax Benefits [Roll Forward]
Unrecognized tax benefits at beginning of year	$ 1,584	$ 1,613
Gross increases – tax positions in prior period	417	12
Gross decreases – tax positions in prior period	(25)	(8)
Gross increases – current-period tax positions	219	292
Lapse of statute of limitations	(614)	(325)
Unrecognized tax benefits at end of year	$ 1,581	$ 1,584