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Related Party Transactions (Schedule of Related Party Transactions) (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Related Party Transactions [Abstract]    
Net sales $ 7,068 $ 6,287
Accounts receivable 2,651 3,606
Accounts payable 3,699 4,642
Loans receivable $ 1,674 $ 1,539