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1. Basis of Presentation and Use of Estimates Reclassification R&D Credits (Details) (Research and Development Expense [Member], USD $) In Thousands, unless otherwise specified | 9 Months Ended
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Sep. 30, 2013
2010 [Member] |
Quantifying Misstatement in Current Year Financial Statements [Line Items] |
Quantifying Misstatement in Current Year Financial Statements, Amount | $ (5,800)
2011 [Member] |
Quantifying Misstatement in Current Year Financial Statements [Line Items] |
Quantifying Misstatement in Current Year Financial Statements, Amount | (8,800)
2012 [Member] |
Quantifying Misstatement in Current Year Financial Statements [Line Items] |
Quantifying Misstatement in Current Year Financial Statements, Amount | (4,800)
Third Quarter 2013 [Member] |
Quantifying Misstatement in Current Year Financial Statements [Line Items] |
Quantifying Misstatement in Current Year Financial Statements, Amount | (1,200)
September 2013 YTD [Member] |
Quantifying Misstatement in Current Year Financial Statements [Line Items] |
Quantifying Misstatement in Current Year Financial Statements, Amount | $ (3,600)

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- Definition Amount of each individual error being corrected in the correcting adjustment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 250 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 1.N.Q3) -URI http://asc.fasb.org/extlink&oid=26874127&loc=d3e30840-122693 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 1 -Section N + Details
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