INCOME TAXES (Details 3) (USD $)	Dec. 31, 2013	Dec. 31, 2012
Operating loss and tax credit carryforwards
Operating loss carryforwards, amounts subject to annual utilization limits	$ 37,000,000
Operating loss carryforwards, annual utilization limit	6,500,000
U.S. Alternative Minimum Tax carryover	1,549,000	948,000
Federal
Operating loss and tax credit carryforwards
Loss carryover	50,059,000	40,894,000
Federal | Research and development credit carryover
Operating loss and tax credit carryforwards
Credit carryover	8,261,000	7,999,000
State
Operating loss and tax credit carryforwards
Loss carryover	7,362,000	33,116,000
State | Research and development credit carryover
Operating loss and tax credit carryforwards
Credit carryover	12,561,000	12,346,000
Texas State | Research and development credit carryover
Operating loss and tax credit carryforwards
Credit carryover	500,000
Foreign loss carryover
Operating loss and tax credit carryforwards
Loss carryover	$ 251,000	$ 1,391,000