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Investments accounted for via the equity method consists of the following (Details)
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Investments accounted for via the equity method consists of the following      
Gruppa Florentina, LLC(1) 20.00%fil_GruppaFlorentinaLlc1 20.00%fil_GruppaFlorentinaLlc1 20.00%fil_GruppaFlorentinaLlc1
LK-Four Hickory, LLC(2) 0.00%fil_LkFourHickoryLlc2 0.00%fil_LkFourHickoryLlc2 0.00%fil_LkFourHickoryLlc2