18. SEGMENT INFORMATION (Detail) - Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Sales	$ 14,424	$ 10,632	$ 8,863
Central and South America [Member]
Sales	2,278	3,852	3,703
Canada [Member]
Sales	1,707	1,759	1,959
Asia [Member]
Sales	3,380	1,570	1,746
Europe and other [Member]
Sales	2,723	473	736
Middle East [Member]
Sales	$ 4,336	$ 2,978	$ 719