Quarterly report pursuant to Section 13 or 15(d)

Inventory - Additional Information (Detail)

v2.4.0.6
Inventory - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified
Mar. 31, 2013
Dec. 31, 2012
Schedule of Inventory [Line Items]    
Provision for excess inventory and obsolete inventory $ 1.9 $ 1.9