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Significant Accounting Policies (Details 2) (USD $) In Thousands, unless otherwise specified | 12 Months Ended | 0 Months Ended | 7 Months Ended
--- | --- | --- | ---
Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2013 Land use right Minimum | Dec. 31, 2013 Land use right Maximum | Dec. 31, 2013 Licenses | Dec. 31, 2013 Licenses Inactivated hepatitis A and recombinant hepatitis A&B licenses | Aug. 15, 2012 Licenses H5N1 licenses item | Aug. 14, 2012 Licenses H5N1 licenses
Licenses |  |  |  |  |  |  |  |  |
Estimated useful life |  |  |  | 28 years | 49 years | 9 years 1 month 28 days | 10 years |  | 20 years
Number of sublicense agreements with termination date revised |  |  |  |  |  |  |  | 3 |
Impairment of long-lived assets |  |  |  |  |  |  |  |  |
Impairment charges on long-lived assets | $ 57 | $ 2,176 | $ 419 |  |  |  |  |  |
Value-added Taxes |  |  |  |  |  |  |  |  |
Value-added taxes rate (as a percent) | 6.00% |  |  |  |  |  |  |  |

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