Inventories (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Inventories [Line Items]
WIP Jonway SUV's	$ 1,975	$ 2,234
Parts and supplies	4,978	4,879
Finished goods	402	240
Inventories, gross	17,813	12,696
Less-inventory reserve	(1,623)	(1,578)
Inventories, net	16,190	11,118
Advanced Technology Vehicles [Member]
Inventories [Line Items]
Vehicles	942	713
Vehicles-Conventional [Member]
Inventories [Line Items]
Vehicles	$ 9,516	$ 4,630