Quarterly report pursuant to Section 13 or 15(d)

STOCKHOLDERS' EQUITY - Changes in Accumulated Other Comprehensive Loss (Details)

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STOCKHOLDERS' EQUITY - Changes in Accumulated Other Comprehensive Loss (Details)
$ in Thousands
9 Months Ended
Sep. 30, 2018
USD ($)
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]  
Balance, December 31, 2017 $ (413)
Balance, September 30, 2018 (1,202)
Foreign Currency Translation Adjustment  
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]  
Balance, December 31, 2017 (386)
Other comprehensive income (loss) (798)
Balance, September 30, 2018 (1,184)
Unrealized Gains/(Losses) on Available-For-Sale Investments  
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]  
Balance, December 31, 2017 (27)
Other comprehensive income (loss) 9
Balance, September 30, 2018 (18)
Total  
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]  
Balance, December 31, 2017 (413)
Other comprehensive income (loss) (789)
Balance, September 30, 2018 $ (1,202)