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Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2014
Accounting Policies [Abstract] |
Schedule of Property, Plant and Equipment Useful Lives | Land is not depreciated. Depreciation on fixed assets is computed using the straight-line method over their estimated useful lives, as follows:
Buildings |  |  | 33 years |
Facilities and leasehold improvements |  |  | 5-10 years |
Machinery and equipment |  |  | 3-10 years |
Computer and R&D equipment |  |  | 3-6 years |
Other |  |  | 2-5 years |

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