Organization and Summary of Significant Accounting Policies (Details Textual) (USD $) Share data in Millions, unless otherwise specified	3 Months Ended		9 Months Ended					9 Months Ended		9 Months Ended								9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2012 Revolving Credit Facility [Member]	Oct. 05, 2012 Revolving Credit Facility [Member]	Sep. 30, 2012 Stock Option [Member]	Sep. 30, 2012 Level 3 [Member]	Dec. 31, 2011 Level 3 [Member]	Dec. 31, 2011 Black-Scholes Merton methodology [Member]	Sep. 30, 2012 Derivative Warrants [Member] Level 3 [Member]	Dec. 31, 2011 Derivative Warrants [Member] Level 3 [Member]	Sep. 30, 2012 Derivative Warrants [Member] Black-Scholes Merton methodology [Member]	Dec. 31, 2011 Derivative Warrants [Member] Black-Scholes Merton methodology [Member]	Sep. 30, 2012 Equity Warrant [Member]	Sep. 30, 2012 Equity Warrant [Member] Level 3 [Member]	Dec. 31, 2011 Equity Warrant [Member] Level 3 [Member]
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Revolving credit facility initiation date			Oct. 05, 2012
Maximum Borrowing Capacity under credit facility									$ 10,000,000
Revolving credit facility maturity date			Dec. 31, 2012					Oct. 05, 2014
Borrowing capacity against eligible foreign and domestic receivables									8,400,000
Letter of credit commitment								1,600,000
Restricted Cash and Cash Equivalents, Noncurrent								1,600,000
Revolving credit facility interest rate								4.75%
Antidilutive securities related to warrant and stock options										1.7								3.3
Fair value using the Black-Scholes Merton methodology	170,000		170,000		170,000	402,000	78,000				0	0		170,000	78,000	200,000	100,000
Warrants Not Settleable in Cash, Fair Value Disclosure	0		0				209,000						200,000						0	209,000
Organization and Summary of Significant Accounting Policies (Textual) [Abstract]
Operating income from continuing operations			7,300,000
Accumulated deficit	(578,712,000)		(578,712,000)				(600,848,000)
Deferred revenue	1,744,000		1,744,000				4,137,000
Revenue relating to funds from collaborative partners	1,700,000		1,700,000
Deferred revenue from product sales	400,000		400,000
Income tax benefit (provision)	(147,000)	0	595,000	0
Estimated taxable income	2.67%		2.67%
Taxable gain from the sale of the oilseed processing business to DSM			37,000,000
Tax liability carry forward	$ 3,000,000		$ 3,000,000