CONSOLIDATE STATEMENTS OF COMPREHENSIVE LOSS (UNAUDITED) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
REVENUE:
Material Sales	$ 10,529	$ 4,537
Royalty and license fees	422	2,669
Technology development and support revenue	1,669	2,395
Total revenue	12,620	9,601
OPERATING EXPENSES:
Cost of material sales	1,088	103
Research and development	6,661	6,555
Selling, general and administrative	4,311	3,872
Patent costs	1,868	1,613
Royalty expense	250	202
Total operating expenses	14,178	12,345
Operating loss	(1,558)	(2,744)
INTEREST INCOME	357	96
INTEREST EXPENSE	(20)	(10)
LOSS ON STOCK WARRANT LIABILITY		(8,926)
LOSS BEFORE INCOME TAX EXPENSE	(1,221)	(11,584)
INCOME TAX EXPENSE		(297)
NET INCOME (LOSS)	(1,221)	(11,881)
OTHER COMPREHENSIVE INCOME (LOSS):
Unrealized (loss) gain on available-for-sale securities	(104)	11
Amortization of prior service cost and actuarial loss for retirement plan included in net periodic pension cost	148	150
TOTAL OTHER COMPREHENSIVE INCOME (LOSS)	44	161
COMPREHENSIVE INCOME (LOSS)	$ (1,177)	$ (11,720)
NET INCOME (LOSS) PER COMMON SHARE:
BASIC (in dollars per share)	$ (0.03)	$ (0.31)
DILUTED (in dollars per share)	$ (0.03)	$ (0.31)
WEIGHTED AVERAGE SHARES USED IN COMPUTING NET INCOME (LOSS) PER COMMON SHARE:
BASIC (in shares)	45,749,072	38,895,999
DILUTED (in shares)	45,749,072	38,895,999