Related Party Transactions and Relationships and Transactions With Certain Other Parties (Details 5) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Guarantees for bank loans from other certain parties    
Guarantee provided during the period      
Bank loans guaranteed 236,452 255,752
Ningbo Litong [Member]
   
Guarantees for bank loans from other certain parties    
Guarantee provided during the period      
Bank loans guaranteed 110,055 56,380
Ningbo Lide [Member]
   
Guarantees for bank loans from other certain parties    
Guarantee provided during the period      
Bank loans guaranteed $ 126,397 $ 199,372