Other Balance Sheet Items (Prepaid Expenses And Other Current Assets) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Balance Sheet Related Disclosures [Abstract]
Prepaid expenses	$ 15,663	$ 15,413
Non-trade receivables	14,840	15,056
Deferred Finance Costs, Current, Net	10,768	0
Other	746	326
Total prepaid expenses and other current assets	$ 42,017	$ 30,795