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COMMITMENTS, CONTINGENCIES AND CONCENTRATIONS (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended 1 Months Ended 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Jan. 31, 2013
Subsequent event
Dec. 31, 2012
Minimum
Dec. 31, 2012
Facilities
Dec. 31, 2012
Equipment
COMMITMENTS, CONTINGENCIES AND CONCENTRATIONS              
Initial or remaining terms of non-cancelable leases       12 years 1 year    
Minimum future obligations under non-cancelable leases              
2013 $ 620         $ 564 $ 56
2014 516         485 31
2015 213         196 17
2016 161         161  
2017 124         124  
2018 and thereafter 541         541  
Total 2,175         2,071 104
Total rental expense under leases $ 734 $ 725 $ 636