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DESCRIPTION OF OPERATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)
 12 Months Ended
Dec. 31, 2017
DESCRIPTION OF OPERATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES  
Schedule of property, equipment and leasehold improvements useful lives

                                                                                                                                                                                                  

Leasehold improvements

 

Shorter of remaining lease terms or useful life

Equipment, furniture and fixtures

 

5 - 7 years

Software and computer equipment

 

3 years