SEGMENT INFORMATION (Tables)

12 Months Ended

Dec. 31, 2013

Segment Reporting [Abstract]

Summary of Assets by Geographic Region

 The following table summarizes revenue by geographic region:

	Year Ended December 31,
	2013		2012		2011
	(in thousands)
China	$	14,844	$	3,893	$	3,877
Australia		10,368		12,494		14
Taiwan		7,361		5,663		50,006
United States		4,444		11,104		12,253
Korea		2,214		19,862		51,461
France		122		8,482		359
Japan		309		2,999		11,362
Other		1,851		2,746		4,668
Revenue	$	41,513	$	67,243	$	134,000

Summary of Revenue by Product Type

The following table summarizes sales by product type:

	Year Ended December 31,
	2013		2012		2011
	(in thousands)
Core	$	23,294	$	9,755	$	61,734
Polished		12,201		50,474		65,468
Optical		4,523		5,723		6,752
Research & Development		1,457		1,223		15
Other		38		68		31
Revenue	$	41,513	$	67,243	$	134,000

Summary of Revenue by Geographic Region

The following table summarizes assets by geographic region:

	As of December 31,
	2013		2012
	(in thousands)
United States	$	157,572	$	210,781
Malaysia		45,086		37,280
Other		37		35
Total Assets	$	202,695	$	248,096