XML 42 R35.htm IDEA: XBRL DOCUMENT v2.4.0.6
Bank borrowings - Additional Information (Detail)
In Millions, unless otherwise specified
Sep. 30, 2012
USD ($)
Dec. 31, 2011
USD ($)
Sep. 30, 2012
Italian line of credit [Member]
USD ($)
Sep. 30, 2012
Italian line of credit [Member]
EUR (€)
Dec. 31, 2011
Italian line of credit [Member]
USD ($)
Dec. 31, 2011
Italian line of credit [Member]
EUR (€)
Line of Credit Facility [Line Items]            
Amount outstanding under line of credit $ 0.3 $ 1.3        
Weighted average interest rates on borrowings under lines of credit (as a percent) 4.96% 4.02%        
Maximum borrowing capacity     $ 9.1 € 7.1 $ 8.1 € 6.3