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Useful Lives of Assets (Detail) | 12 Months Ended
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Dec. 31, 2013
Buildings |
Property, Plant and Equipment [Line Items] |
Useful lives, maximum years | 40 years
Building Improvements | Minimum |
Property, Plant and Equipment [Line Items] |
Useful lives, maximum years | 5 years
Building Improvements | Maximum |
Property, Plant and Equipment [Line Items] |
Useful lives, maximum years | 10 years
Leasehold Improvements |
Property, Plant and Equipment [Line Items] |
Useful lives, description | Lesser of lease term or useful life
Furniture and Fixtures |
Property, Plant and Equipment [Line Items] |
Useful lives, maximum years | 10 years
Test Systems Manufactured Internally |
Property, Plant and Equipment [Line Items] |
Useful lives, maximum years | 6 years
Machinery and Equipment | Minimum |
Property, Plant and Equipment [Line Items] |
Useful lives, maximum years | 3 years
Machinery and Equipment | Maximum |
Property, Plant and Equipment [Line Items] |
Useful lives, maximum years | 5 years
Software | Minimum |
Property, Plant and Equipment [Line Items] |
Useful lives, maximum years | 3 years
Software | Maximum |
Property, Plant and Equipment [Line Items] |
Useful lives, maximum years | 5 years

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- Definition Describes the periods of time over which an entity anticipates to receive utility from its property, plant and equipment (that is, the periods of time over which an entity allocates the initial cost of its property, plant and equipment). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6367646&loc=d3e18780-107790 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -URI http://asc.fasb.org/subtopic&trid=2155824 + Details
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- Details
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- Definition Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. + References No definition available. + Details
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