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Related Party Transactions (Schedule of Related Party Transactions) (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Related Party Transactions [Abstract]    
Due from related parties (included in the accompanying balance sheets) $ 3,828us-gaap_DueFromRelatedPartiesCurrent $ 6,406us-gaap_DueFromRelatedPartiesCurrent
Due to related parties (included in the accompanying balance sheets) $ 4,842us-gaap_DueToRelatedPartiesCurrent $ 146us-gaap_DueToRelatedPartiesCurrent