CONCENTRATION OF RISK, Revenues by Geographic Area (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Revenues by geographic area [Abstract]
United States	$ 874,000	$ 1,425,000	$ 3,432,000	$ 4,872,000
Revenues by geographic area [Line Items]
Total revenue	12,504,000	21,777,000	55,111,000	42,630,000
South Korea [Member]
Revenues by geographic area [Line Items]
Total revenue	7,735,000	11,225,000	38,689,000	24,300,000
Japan [Member]
Revenues by geographic area [Line Items]
Total revenue	3,352,000	9,032,000	10,055,000	12,743,000
Taiwan [Member]
Revenues by geographic area [Line Items]
Total revenue	398,000	68,000	2,387,000	605,000
Other foreign locations [Member]
Revenues by geographic area [Line Items]
Total revenue	$ 145,000	$ 27,000	$ 548,000	$ 110,000