Quarterly report pursuant to Section 13 or 15(d)

ORGANIZATION AND DESCRIPTION OF BUSINESS (Liquidity and Capital Resources) (Details)

v3.20.2
ORGANIZATION AND DESCRIPTION OF BUSINESS (Liquidity and Capital Resources) (Details)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2020
USD ($)
Patent
Jun. 30, 2020
USD ($)
Mar. 31, 2020
USD ($)
Sep. 30, 2019
USD ($)
Jun. 30, 2019
USD ($)
Mar. 31, 2019
USD ($)
Sep. 30, 2020
USD ($)
Patent
Sep. 30, 2019
USD ($)
Dec. 31, 2019
USD ($)
Subsidiary, Sale of Stock [Line Items]                  
Accumulated deficit $ 143,775           $ 143,775   $ 122,492
Net loss (6,063) $ (7,215) $ (8,005) $ (7,447) $ (7,498) $ (7,137) (21,283) $ (22,082)  
Substantial doubt about going concern, management's evaluation, cash used in the period             (17,000)    
Cash and cash equivalents $ 20,123           $ 20,123   $ 10,688
IP Portfolio                  
Subsidiary, Sale of Stock [Line Items]                  
Number of developed technology patents | Patent 250           250    
IP Portfolio, XBAR Technology                  
Subsidiary, Sale of Stock [Line Items]                  
Number of developed technology patents | Patent 90           90