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Accounts Receivable-Related Parties (Narrative) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Related Party Transaction [Line Items]
Accounts receivable-related parties	$ 46us-gaap_DueFromRelatedPartiesCurrent	$ 2,617us-gaap_DueFromRelatedPartiesCurrent

The aggregate amount of receivables to be collected from related parties where one party can exercise control or significant influence over another party; including affiliates, owners or officers and their immediate families, pension trusts, and so forth, at the financial statement date. which are usually due within one year (or one business cycle).

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