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COMMITMENTS AND CONTINGENCIES, LEASES (Details) - Cambridge Lease
Nov. 01, 2018
Sep. 17, 2012
USD ($)
ft²
item
Sep. 30, 2017
USD ($)
Commitments      
Lease space (in square feet) | ft²   26,150  
Term of commercial lease   6 years 3 months  
Number of options to extend lease | item   1  
Term of lease extension option 5 years 5 years  
Standby letter of credit   $ 311,000  
Deferred rent liability     $ 238,000