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PREPAID EXPENSES AND OTHER CURRENT ASSETS (Details) - USD ($)
$ in Thousands
Dec. 31, 2016
Dec. 31, 2015
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]    
Maintenance agreements, current portion $ 6,590 $ 7,000
Short-term investments in real estate 13,025 0
Income taxes receivable 5,186 633
Prepaid expenses 6,919 7,873
Litigation settlement insurance recovery 4,000 0
Other current assets 6,888 6,245
Total $ 42,608 $ 21,751