ORGANIZATION AND DESCRIPTION OF BUSINESS (Details) $ in Thousands	12 Months Ended
Dec. 31, 2021 USD ($) patent segment	Dec. 31, 2020 USD ($)
Subsidiary, Sale of Stock [Line Items]
Number of operating segments \| segment	1
Accumulated deficit	$ (186,876)	$ (150,906)
Net loss	(35,970)	(28,414)
Cash used	22,100
Cash and cash equivalents	$ 21,206	$ 24,968
IP Portfolio
Subsidiary, Sale of Stock [Line Items]
Number of developed technology patents \| patent	415
IP Portfolio, XBAR Technology
Subsidiary, Sale of Stock [Line Items]
Number of developed technology patents \| patent	265

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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+ Details

- Definition

The cumulative amount of the reporting entity's undistributed earnings or deficit.

+ References + Details