Description Of Business And Summary Of Significant Accounting Policies (Summary Of Capitalized Costs) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Internally Used Third-Party Software And Consulting Fees [Member]
Description Of Business And Summary Of Significant Accounting Policies [Line Items]
Capitalized software cost	$ 3,172	$ 3,032
Internally Developed Software [Member]
Description Of Business And Summary Of Significant Accounting Policies [Line Items]
Capitalized software cost	$ 21,733	$ 17,205