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COMMITMENTS AND CONTINGENCIES (Royalty Commitments) (Details) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2012
OCS [Member]
Dec. 31, 2011
OCS [Member]
Dec. 31, 2010
OCS [Member]
Dec. 31, 2012
BIRD-F [Member]
Dec. 31, 1996
BIRD-F [Member]
Long-term Purchase Commitment [Line Items]          
Royalty rates 3.50%     5.00%  
Percent of grants received paid in royalties 100.00%     150.00%  
Proceeds from grants received $ 33,408       $ 340
Accumulated interest, grants 9,810        
Royalties due based on stated percentage       775  
Royalties payable maximum       427  
Accumulated royalties paid 10,182     296  
Total commitment with respect to royalty-bearing participation received, net of royalties paid 33,542     348  
Royalty expenses $ 562 $ 759 $ 793