Annual report pursuant to Section 13 and 15(d)

REVENUE RECOGNITION - Narrative (Details)

v3.20.1
REVENUE RECOGNITION - Narrative (Details)
12 Months Ended
Dec. 31, 2019
USD ($)
Dec. 31, 2018
USD ($)
Sep. 30, 2019
USD ($)
Licensing_Agreements
Disaggregation of Revenue [Line Items]      
Minimum notice of cancellation 30 days    
Contract exclusivity period $ 735,000 $ 524,000  
Proprietary Circuit Designs using XBAR Technology | Murata Manufacturing Co., Ltd.      
Disaggregation of Revenue [Line Items]      
Number of licensed radio frequencies or bands | Licensing_Agreements     4
Prepaid royalties     $ 9,000,000
Revenue from collaboration agreement 30 months    
Accounts Receivable | Proprietary Circuit Designs using XBAR Technology | Murata Manufacturing Co., Ltd.      
Disaggregation of Revenue [Line Items]      
Contract exclusivity period $ 2,000,000.0