Annual report pursuant to Section 13 and 15(d)

Income Taxes (Details 3)

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Income Taxes (Details 3)
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Summary of difference between the federal statutory tax rate and the effective tax rate      
Federal statutory rate 35.00% 35.00% 35.00%
State income taxes, net of federal benefit 2.40% 3.10% 3.60%
Foreign income tax (7.90%) (0.90%) (1.90%)
Research and development tax credits 1.00% (0.30%) 0.20%
Original issue discount 0.00% 0.00% 0.10%
Non-Deductible components of convertible debt (16.70%) 0.00% 0.00%
Other items including valuation allowance adjustments and permanent items (11.40%) (11.40%) 35.90%
Effective Income Tax Rate Reconciliation, Other Adjustments, Percent (3.90%) (0.70%) 2.00%
Total (1.50%) 24.80% 74.90%