Quarterly report pursuant to Section 13 or 15(d)

REVENUE RECOGNITION - Narrative (Details)

v3.20.2
REVENUE RECOGNITION - Narrative (Details)
$ in Thousands
 1 Months Ended 3 Months Ended 9 Months Ended
Sep. 30, 2020
USD ($)
Oct. 31, 2019
USD ($)
Sep. 30, 2020
USD ($)
Sep. 30, 2019
USD ($)
Radio_Frequencies
Sep. 30, 2020
USD ($)
Sep. 30, 2019
USD ($)
Radio_Frequencies
Dec. 31, 2019
USD ($)
Disaggregation of Revenue [Line Items]              
Revenue from collaboration agreement     $ 1,405 $ 79 $ 2,553 $ 276  
Proprietary Circuit Designs using XBAR Technology | Murata Manufacturing Co., Ltd.              
Disaggregation of Revenue [Line Items]              
Number of Licensed Specific Radio Frequencies | Radio_Frequencies       4   4  
Prepaid royalties             $ 9,000
Written termination period         30 days    
Contracted exclusivity period         30 months    
Revenue from collaboration agreement $ 2,500 $ 2,000 $ 1,200   $ 2,700