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Note 8 - Customer and Geographic Information (Details) - Receivables Percentage by Major Customers	Jun. 30, 2013	Dec. 31, 2012
Customer A [Member]
Note 8 - Customer and Geographic Information (Details) - Receivables Percentage by Major Customers [Line Items]
Accounts Receivable Percentage by Major Customers	34.00%	42.00%
Customer B [Member]
Note 8 - Customer and Geographic Information (Details) - Receivables Percentage by Major Customers [Line Items]
Accounts Receivable Percentage by Major Customers	15.00%	18.00%
Customer C [Member]
Note 8 - Customer and Geographic Information (Details) - Receivables Percentage by Major Customers [Line Items]
Accounts Receivable Percentage by Major Customers	21.00%	11.00%

X

- Definition

Percentage of accounts receivable from a single external customer that accounts for 10 percent or more of an entity's total accounts receivable as of the balance sheet date

+ References

No definition available.

+ Details

Name:	pdfs_AccountsReceivableMajorCustomerPercentage
Namespace Prefix:	pdfs_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- Details

Name:	pdfs_Note8CustomerandGeographicInformationDetailsReceivablesPercentagebyMajorCustomersLineItems
Namespace Prefix:	pdfs_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration