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FAIR VALUE (Details 3) (Scottish Enterprise Agreement)
6 Months Ended
Jun. 30, 2014
USD ($)
Jun. 30, 2014
GBP (£)
Dec. 31, 2013
USD ($)
Dec. 31, 2013
GBP (£)
Jan. 06, 2010
USD ($)
Jan. 06, 2010
GBP (£)
Dec. 31, 2009
USD ($)
Jul. 01, 2009
USD ($)
Jul. 01, 2009
GBP (£)
Jun. 22, 2009
USD ($)
Jun. 22, 2009
GBP (£)
Scottish Enterprise Agreement                      
Maximum guaranteed amount potentially due to SE $ 6,800,000   $ 6,500,000 £ 4,000,000     $ 8,000,000       £ 5,000,000
Modified payment for which parties agreed                   1,700,000 1,000,000
Amount paid         800,000 500,000   800,000 500,000    
Potential amount to be paid if staffing levels reduced below the prescribed levels 6,600,000 3,900,000 6,300,000 3,800,000              
Fair value of the liability $ 0   $ 20,000                
Expected volatility (as a percent) 30.00% 30.00%                  
Probability of falling below a minimum staffing level within prescribed time period (as a percent) 1.00% 1.00%