Quarterly report pursuant to Section 13 or 15(d)

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

v3.20.1
ORGANIZATION AND DESCRIPTION OF BUSINESS (Liquidity and Capital Resources) (Details)
$ in Thousands
3 Months Ended
Mar. 31, 2020
USD ($)
Patent
Mar. 31, 2019
USD ($)
Dec. 31, 2019
USD ($)
Subsidiary, Sale of Stock [Line Items]      
Accumulated deficit $ 130,497   $ 122,492
Net loss (8,005) $ (7,137)  
Substantial doubt about going concern, management's evaluation, cash used in the period (7,600)    
Cash and cash equivalents $ 29,589 $ 8,691 $ 10,688
IP Portfolio      
Subsidiary, Sale of Stock [Line Items]      
Number of Developed Technology Patents | Patent 200    
IP Portfolio, XBAR Technology      
Subsidiary, Sale of Stock [Line Items]      
Number of Developed Technology Patents | Patent 60