ACCRUED EXPENSES (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
ACCRUED EXPENSES
Compensation	$ 1,985	$ 2,041
Research and trial related expenses	576	440
Licenses	373	338
Professional fees	351	182
Occupancy costs	23	31
Other	19	37
Accrued expenses	$ 3,327	$ 3,069