|
Estimated Useful Lives of Property and Equipment (Detail)
|
3 Months Ended |
|---|---|
|
Mar. 31, 2013
|
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|
Leasehold Improvements
|
|
| Property, Plant and Equipment [Line Items] | |
| Leasehold improvements | Lesser of lease term or estimated useful life |
|
Minimum | Machinery and Equipment
|
|
| Property, Plant and Equipment [Line Items] | |
| Property, plant and equipment, Useful Life | 3 years |
|
Minimum | Furniture and Fixtures
|
|
| Property, Plant and Equipment [Line Items] | |
| Property, plant and equipment, Useful Life | 5 years |
|
Minimum | Computers And Software
|
|
| Property, Plant and Equipment [Line Items] | |
| Property, plant and equipment, Useful Life | 3 years |
|
Maximum | Machinery and Equipment
|
|
| Property, Plant and Equipment [Line Items] | |
| Property, plant and equipment, Useful Life | 20 years |
|
Maximum | Furniture and Fixtures
|
|
| Property, Plant and Equipment [Line Items] | |
| Property, plant and equipment, Useful Life | 7 years |
|
Maximum | Computers And Software
|
|
| Property, Plant and Equipment [Line Items] | |
| Property, plant and equipment, Useful Life | 7 years |