Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011
Operating activities:
Net income	$ 22,136	$ 8,143
Net loss (income) from discontinued operations	49	(37)
Net income from continuing operations	22,185	8,106
Adjustments to reconcile net income from continuing operations to net cash used in operating activities of continuing operations:
Depreciation and amortization	1,120	1,017
Share-based compensation	746	1,058
Gain on extinguishment of debt upon repurchase of convertible debt	0	(15,349)
Accretion (amortization) of debt net premium/discount from convertible debt	73	(140)
Loss on net change in fair value of derivative assets and liabilities	(92)	(1,005)
(Gain) on sale of oilseed processing business	(31,278)	0
Non-cash restructuring charges	17	377
Changes in operating assets and liabilities:
Accounts receivable	4,487	(1,273)
Inventories	1,413	(632)
Other assets	(485)	278
Accounts payable and accrued liabilities	(6,428)	(6,017)
Deferred revenue	(2,607)	2,986
Net cash used in operating activities of continuing operations	(10,665)	(8,584)
Investing activities:
Proceeds from sale of oilseed processing business, net of transaction costs paid	31,183	0
Purchases of property and equipment, net	(7,684)	(3,916)
Release of restricted cash	4,100	0
Net cash provided by (used in) investing activities of continuing operations	27,599	(3,916)
Financing activities:
Proceeds from sale of common stock	481	0
Repurchase of convertible debt	(34,851)	(38,645)
Proceeds from equipment loan	2,889	0
Net cash used in financing activities of continuing operations	(31,481)	(38,645)
Cash used in discontinued operations:
Net cash used in operating activities of discontinued operations	(274)	(1,112)
Net cash used in discontinued operations	(274)	(1,112)
Net decrease in cash and cash equivalents	(14,821)	(52,257)
Cash and cash equivalents at beginning of year	28,759	87,929
Cash and cash equivalents at end of year	13,938	35,672
Supplemental disclosure of cash flow information:
Interest paid	$ 958	$ 2,428