Accrued And Other Liabilities (Schedule Of Other Liabilities) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Noncurrent Accrued Liabilities [Line Items]
Defined benefit pension obligation	$ 5,861	$ 5,139
Long-term tax liability	90	803
Long-term deferred revenue	4,218	2,787
Other long-term liabilities	826	657
Total	15,201	10,840
Other Noncurrent Liabilities [Member]
Noncurrent Accrued Liabilities [Line Items]
Earnouts related to acquisitions	$ 4,206	$ 1,454