Condensed Consolidated Balance Sheets (USD $) In Thousands	Jun. 30, 2011		Dec. 31, 2010
Current assets:
Cash and cash equivalents	$ 16,183		$ 13,193
Trade accounts receivable, net	62		52
Receivable from sale of licensing rights	31		27
Inventories, net	3,564		3,419
Prepaid expenses and other current assets	79		350
Total current assets	19,919		17,041
Property, plant and equipment, net	2,470		2,169
Intangible assets, net of accumulated amortization	602		627
Receivable from sale of licensing rights, less current maturities	63		80
MSA escrow funds	368		368
Total assets	23,422		20,285
Current liabilities:
Current maturities of long-term debt	2,497		2,518
Accounts payable, trade	1,828		1,585
Accrued expenses	762		424
Due to stockholders	50		50
Total current liabilities	5,137		4,577
Long-term debt, less current maturities	3,811		5,049
Total liabilities	8,948		9,626
Commitments and contingencies (note 6)
Stockholders' equity:
Common stock(A)	14	[1]	13	[1]
Additional paid-in capital	196,232		181,336
Accumulated deficit	(181,772)		(170,690)
Total stockholders' equity	14,474		10,659
Total liabilities and stockholders' equity	$ 23,422		$ 20,285

[1] $0.0001 par value per share, 187,500,000 shares authorized, 135,055,505 and 127,119,323 shares issued and outstanding as of June 30, 2011 and December 31, 2010, respectively.