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INVENTORIES, NET (Schedule of Inventory Reserve) (Details) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 12 Months Ended
Mar. 31, 2015
Dec. 31, 2014
INVENTORIES, NET [Abstract]    
Beginning balance $ 1,380us-gaap_InventoryValuationReserves $ 1,981us-gaap_InventoryValuationReserves
Current provision for Jonway Auto 91zaap_InventoryProvisionNonControllingInterest 251zaap_InventoryProvisionNonControllingInterest
Current provision for inventory ZAP-net    (852)zaap_InventoryProvisionControllingEntity
Ending balance $ 1,471us-gaap_InventoryValuationReserves $ 1,380us-gaap_InventoryValuationReserves