Property and Equipment Estimated Useful Lives (Detail)
|
12 Months Ended |
---|---|
Dec. 31, 2012
|
|
Equipment | Minimum
|
|
Property, Plant and Equipment [Line Items] | |
Property plant and equipment useful life | 3 years |
Equipment | Maximum
|
|
Property, Plant and Equipment [Line Items] | |
Property plant and equipment useful life | 7 years |
Furniture and Fixtures
|
|
Property, Plant and Equipment [Line Items] | |
Property plant and equipment useful life | 7 years |
Software
|
|
Property, Plant and Equipment [Line Items] | |
Property plant and equipment useful life | 3 years |
Leasehold Improvements
|
|
Property, Plant and Equipment [Line Items] | |
Property plant and equipment useful life | Lesser of lease term or life of improvements |