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CONCENTRATION OF RISK, Revenues and Accounts Receivable (Details) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 12 Months Ended
Dec. 31, 2013
Sep. 30, 2013
Jun. 30, 2013
Mar. 31, 2013
Dec. 31, 2012
Sep. 30, 2012
Jun. 30, 2012
Mar. 31, 2012
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2013
Total Revenue [Member]
Government Contracts Concentration Risk [Member]
Dec. 31, 2012
Total Revenue [Member]
Government Contracts Concentration Risk [Member]
Dec. 31, 2011
Total Revenue [Member]
Government Contracts Concentration Risk [Member]
Dec. 31, 2013
Total Revenue [Member]
Customer Concentration Risk [Member]
Major Customer A [Member]
Dec. 31, 2012
Total Revenue [Member]
Customer Concentration Risk [Member]
Major Customer A [Member]
Dec. 31, 2011
Total Revenue [Member]
Customer Concentration Risk [Member]
Major Customer A [Member]
Dec. 31, 2013
Total Revenue [Member]
Customer Concentration Risk [Member]
Major Customer B [Member]
Dec. 31, 2012
Total Revenue [Member]
Customer Concentration Risk [Member]
Major Customer B [Member]
Dec. 31, 2011
Total Revenue [Member]
Customer Concentration Risk [Member]
Major Customer B [Member]
Dec. 31, 2013
Total Revenue [Member]
Customer Concentration Risk [Member]
Major Customer C [Member]
Dec. 31, 2012
Total Revenue [Member]
Customer Concentration Risk [Member]
Major Customer C [Member]
Dec. 31, 2011
Total Revenue [Member]
Customer Concentration Risk [Member]
Major Customer C [Member]
Dec. 31, 2012
Total Revenue [Member]
Geographic Concentration Risk [Member]
Dec. 31, 2011
Total Revenue [Member]
Geographic Concentration Risk [Member]
Dec. 31, 2010
Total Revenue [Member]
Geographic Concentration Risk [Member]
Dec. 31, 2013
Accounts Receivable [Member]
Customer Concentration Risk [Member]
Major Customer A [Member]
Dec. 31, 2012
Accounts Receivable [Member]
Customer Concentration Risk [Member]
Major Customer A [Member]
Dec. 31, 2011
Accounts Receivable [Member]
Customer Concentration Risk [Member]
Major Customer A [Member]
Dec. 31, 2013
Accounts Receivable [Member]
Customer Concentration Risk [Member]
Major Customer B [Member]
Dec. 31, 2012
Accounts Receivable [Member]
Customer Concentration Risk [Member]
Major Customer B [Member]
Dec. 31, 2011
Accounts Receivable [Member]
Customer Concentration Risk [Member]
Major Customer B [Member]
Dec. 31, 2013
Accounts Receivable [Member]
Customer Concentration Risk [Member]
Major Customer C [Member]
Dec. 31, 2012
Accounts Receivable [Member]
Customer Concentration Risk [Member]
Major Customer C [Member]
Dec. 31, 2011
Accounts Receivable [Member]
Customer Concentration Risk [Member]
Major Customer C [Member]
Concentration Risk [Line Items]                                                                      
Revenue $ 49,478 [1] $ 32,826 $ 49,359 $ 14,976 $ 28,133 $ 12,504 $ 29,987 $ 12,620 $ 146,639 $ 83,244 $ 61,289 $ 1,100 $ 3,400 $ 5,800                                          
Concentration risk, percentage (in hundredths)                       1.00% 4.00% 9.00% 60.00% 68.00% 51.00% 22.00% 5.00% 11.00% 9.00% 6.00% 18.00% 99.00% 95.00% 89.00%                  
Accounts receivable $ 15,657       $ 8,657       $ 15,657 $ 8,657                                 $ 7,337 $ 6,257 $ 5,208 $ 2,905 $ 867 $ 845 $ 4,743 $ 0 $ 63
Concentration risk, additional characteristic                                               outside of North America                      
[1] ncludes $1.5 million of revenue that was recognized relating to cash payments received in a prior year that were creditable against license fees and/or royalties for which the Company determined there was no appreciable likelihood of executing a commercial license agreement with the customer (see Note 2).