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Property, Plant and Equipment
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9 Months Ended |
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Sep. 30, 2014
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| Property, Plant and Equipment [Abstract] | |
| Property, Plant and Equipment | (8) Property, Plant and Equipment The company received proceeds of $10.0 million in the first nine months of 2014 in connection with the sale of certain property and equipment at the NASA Wallops Facility to the Commonwealth of Virginia. |