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DISCONTINUED OPERATIONS (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2014
Jun. 30, 2013
Reclassification of operating results from continuing operations to loss from discontinued operations        
Income tax on discontinued operations $ (3) $ (10) $ (8) $ (20)
Net income from discontinued operations 7 14 15 30
ALIGN products
       
Reclassification of operating results from continuing operations to loss from discontinued operations        
Interest income 10 24 23 50
Income tax on discontinued operations (3) (10) (8) (20)
Net income from discontinued operations $ 7 $ 14 $ 15 $ 30