Commitments And Contingencies (Schedule Of Future Minimum Payments) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011
Commitments And Contingencies [Abstract]
2012, Capital Leases	$ 1,201
2013, Capital Leases	1,201
2014, Capital Leases
2015, Capital Leases
2016, Capital Leases
Thereafter, Capital Leases
Total minimum lease payments, Capital Leases	2,402
Less amount representing interest	(159)
Present value of future minimum lease payments	2,243
2012, Operating Leases	10,155
2013, Operating Leases	7,783
2014, Operating Leases	6,876
2015, Operating Leases	5,747
2016, Operating Leases	3,670
Thereafter, Operating Leases	4,894
Total minimum lease payments, Operating Leases	$ 39,125

The total of contractually required rental payments on leases meeting the criteria for capitalization.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 13

-Paragraph 16

-Subparagraph a(ii)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 840

-SubTopic 30

-Section 50

-Paragraph 1

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6455398&loc=d3e45280-112737