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Balance Sheet Components (Short-Term Line of Credit) (Narrative) (Details) (USD $)
In Thousands, unless otherwise specified
9 Months Ended
Sep. 30, 2012
Line of Credit Facility [Abstract]  
Maximum borrowing capacity $ 10,000
Maximum borrowing capacity as a percentage of eligible A/R 80.00%
Maximum borrowing capacity under non-formula advances $ 10,000
Borrowing terms for non-formula advances 5 days