Quarterly report pursuant to sections 13 or 15(d)

Related Party Transactions - Additional Information (Detail)

v2.4.0.8
Related Party Transactions - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Sep. 30, 2013
Sep. 30, 2012
Dec. 31, 2012
Related Party Transactions [Abstract]          
Total purchases $ 0.1 $ 0.1 $ 0.1 $ 0.1  
Total sales 0.1 0.1 0.1 0.1  
Outstanding receivables 0.1   0.1   0.1
Rent paid     $ 0.1