Condensed Consolidated Balance Sheets (Unaudited) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Current assets:
Cash and cash equivalents	$ 13,938	$ 28,759
Restricted cash	2,500	5,000
Accounts receivable, net of allowance for doubtful accounts of $0.1 million at Sep 30, 2012 and December31, 2011	6,884	11,371
Inventories,net	4,910	6,323
Other current assets	2,637	2,396
Total current assets	30,869	53,849
Property and equipment, net	14,346	7,806
Restricted cash	1,600	3,200
Other long term assets	653	482
Total assets	47,468	65,337
Current liabilities:
Accounts payable	4,293	8,543
Accrued expenses	4,363	6,519
Deferred revenue	1,744	4,137
Convertible debt, at carrying value	0	34,851
Current portion of long-term debt	184	0
Current liabilities of discontinued operations	218	436
Total current liabilities	10,802	54,486
Long term debt, net of current portion	2,705	0
Other long term liabilities	653	906
Total liabilities	14,160	55,392
Stockholders' equity:
Preferred stock-$0.001 par value; 5,000 shares authorized, no shares issued and outstanding at Sep 30, 2012 and December 31, 2011	0	0
Common stock-$0.001 par value; 245,000 shares authorized at Sep 30, 2012 and December31, 2011; 12,776 and 12,611 shares issued and outstanding at Sep 30, 2012 and December31, 2011	13	12
Additional paid-in capital	612,007	610,781
Accumulated deficit	(578,712)	(600,848)
Total stockholders' equity	33,308	9,945
Total liabilities and stockholders' equity	$ 47,468	$ 65,337