COMMITMENTS - Narrative (Details)	1 Months Ended		12 Months Ended
	Oct. 31, 2019	Oct. 31, 2018	Dec. 30, 2018 USD ($)	Dec. 31, 2017 USD ($)	Jan. 01, 2017 USD ($)	Feb. 13, 2019 ft²
Purchase Commitment Excluding Longterm Commitment [Line Items]
Operating lease relating to future lease commitments due within the next twelve months			$ 881,000	$ 866,000	$ 834,000
Subsequent Event
Purchase Commitment Excluding Longterm Commitment [Line Items]
Lease period						5 years
Square feet of office space leased | ft²						24,164
Scenario Forecast
Purchase Commitment Excluding Longterm Commitment [Line Items]
Operating lease end date	2019-07
Operating lease termination notice period	9 months
Primary Facility Lease
Purchase Commitment Excluding Longterm Commitment [Line Items]
Operating lease expiration date			2020-03
Research and Development Centre | San Diego, California
Purchase Commitment Excluding Longterm Commitment [Line Items]
Operating lease expiration date		2020-07
Wafer Inventory
Purchase Commitment Excluding Longterm Commitment [Line Items]
Outstanding commitment for purchases			$ 22,000	$ 1,100,000
Goods and Services
Purchase Commitment Excluding Longterm Commitment [Line Items]
Purchase obligations due within next twelve months			$ 931,000