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Organization and Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2017
Accounting Policies [Abstract] |
Property, Plant and Equipment, Estimated Useful Life | Estimated useful lives in years are generally as follows:
Description | Estimated Useful Life
Buildings and improvements | 20-35
Laboratory and manufacturing equipment | 4-10
Office and computer equipment | 3-7
Leasehold improvements | Shorter of useful life or lease term

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