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PREPAID EXPENSES AND OTHER CURRENT ASSETS (Details) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2014
Dec. 31, 2013
PREPAID EXPENSES AND OTHER CURRENT ASSETS    
Maintenance agreements, current portion $ 4,938 $ 4,600
Income taxes receivable 1,824 1,645
Prepaid expenses 4,740 4,191
Other current assets 1,734 953
Total $ 13,236 $ 11,389