Consolidated Balance Sheets (USD $)	Jun. 30, 2012	Dec. 31, 2011
Assets
Cash and cash equivalents	$ 21,924,000	$ 16,444,000
Restricted cash	2,230,000	625,000
Investments	12,958,000	25,274,000
Receivables from collaborations	5,084,000	5,831,000
Interest reserve	1,742,000	1,742,000
Inventories	263,000	263,000
Prepaid expenses and other current assets	344,000	378,000
Deferred collaboration expense	519,000	2,301,000
Total current assets	45,064,000	52,858,000
Investments	16,351,000	15,382,000
Furniture and equipment, net	882,000	1,098,000
Deferred collaboration expense	5,235,000	5,437,000
Other assets	8,704,000	7,433,000
Total assets	76,236,000	82,208,000
Liabilities and Stockholders' Equity
Accounts payable	3,328,000	2,497,000
Accrued expenses	8,206,000	12,616,000
Interest payable	3,500,000	1,400,000
Deferred collaboration revenue	4,072,000	9,786,000
Total current liabilities	19,106,000	26,299,000
Deferred collaboration revenue	6,512,000	7,103,000
Foreign currency derivative	4,959,000	4,000,000
Non-recourse notes payable	30,000,000	30,000,000
Commitments and contingencies
Stockholders' equity:
Preferred stock, $0.001 par value; shares authorized - 5,000; no shares issued and outstanding
Common stock, $.01 par value: shares authorized 95,000; shares issued and outstanding 50,129 in 2012 and 45,662 in 2011	501,000	457,000
Additional paid-in capital	386,966,000	367,829,000
Accumulated other comprehensive income	40,000	40,000
Accumulated deficit	(371,848,000)	(353,520,000)
Total stockholders' equity	15,659,000	14,806,000
Total liabilities and stockholders' equity	$ 76,236,000	$ 82,208,000