ACCRUED EXPENSES (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
ACCRUED EXPENSES
Accrued Royalty and License Fees	$ 1,776	$ 1,179
Accrued Payroll and Employee Benefits	925	2,145
Accrued Research and Development Contract Costs	7,569	3,035
Accrued Professional Fees	317	297
Other Accrued Expenses	373	352
Accrued Expenses	$ 10,960	$ 7,008