ACCRUED EXPENSES (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
ACCRUED EXPENSES
Employee compensation and benefits	$ 1,079	$ 2,379
Professional services	313	301
Intellectual property	132	105
Other	1,155	734
Total accrued expenses	$ 2,679	$ 3,519