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Related-party Transactions (Tables)
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12 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||
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Dec. 31, 2012
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| Schedule of Amounts Related to Revenue and Expenses Incurred in Transactions | The following table presents the amounts related to revenue and expenses incurred in transactions with these related parties:
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| Schedule of Amounts Related to Accounts Receivable and Payables with Related Parties | The following table presents the amounts related to accounts receivable and payable balances with these related parties:
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