Revenue from Contract with Customer, Contracted Exclusivity Period

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- Definition

Sale of Stock, Consideration Receivable, Pending Execution of Multi-Year Commercial Agreement

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- Definition

Face amount or stated value per share of common stock.

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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Amount of asset related to consideration paid in advance for royalties that provide economic benefits within a future period of one year or the normal operating cycle, if longer.

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- Definition

Amount of transactions with related party during the financial reporting period.

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Expenses recognized resulting from transactions (excluding transactions that are eliminated in consolidated or combined financial statements) with related party.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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Amount, including tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value-added and excise.

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- Definition

The number of shares issued or sold by the subsidiary or equity method investee per stock transaction.

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No definition available.

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Per share amount received by subsidiary or equity investee for each share of common stock issued or sold in the stock transaction.

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Aggregate value of stock related to Restricted Stock Awards issued during the period.

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RELATED PARTY TRANSACTIONS (Details) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended		3 Months Ended		9 Months Ended
	Aug. 31, 2019	Jul. 31, 2019	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Related Party Transaction [Line Items]
Common stock, par value (in dollars per share)			$ 0.001		$ 0.001		$ 0.001
Revenue from Collaboration agreement			$ 79	$ 115	$ 276	$ 396
Consulting Agreement
Related Party Transaction [Line Items]
Related party advisory services agreement	$ 50
Consulting Agreement \| General and administrative expenses
Related Party Transaction [Line Items]
Expenses from transactions with related party			8		8
Consulting Agreement \| Research and development expenses
Related Party Transaction [Line Items]
Restricted stock award, gross			42		42
Restricted stock units \| Consulting Agreement
Related Party Transaction [Line Items]
Expenses from transactions with related party	$ 100				$ 100
Murata Manufacturing Co., Ltd. \| Proprietary Circuit Designs using XBAR Technology
Related Party Transaction [Line Items]
Contracted exclusivity period					30 months
Prepaid royalties			$ 9,000		$ 9,000
Accounts Receivable \| Murata Manufacturing Co., Ltd. \| Proprietary Circuit Designs using XBAR Technology
Related Party Transaction [Line Items]
Revenue from Collaboration agreement					$ 2,000
Murata Manufacturing Co., Ltd.
Related Party Transaction [Line Items]
Common stock, par value (in dollars per share)		$ 0.001
Ownership interest, percent			8.50%		8.50%
Murata Manufacturing Co., Ltd. \| Murata Manufacturing Co., Ltd. \| Proprietary Circuit Designs using XBAR Technology
Related Party Transaction [Line Items]
Contracted exclusivity period					30 months
Prepaid royalties			$ 9,000		$ 9,000
Murata Manufacturing Co., Ltd. \| Accounts Receivable \| Murata Manufacturing Co., Ltd. \| Proprietary Circuit Designs using XBAR Technology
Related Party Transaction [Line Items]
Revenue from Collaboration agreement					$ 2,000
Murata Manufacturing Co., Ltd. \| Murata Manufacturing Co., Ltd.
Related Party Transaction [Line Items]
Consideration receivable, pending execution of multi-year commercial agreement		$ 7,000
Murata Manufacturing Co., Ltd. \| Murata Manufacturing Co., Ltd. \| Private Placement
Related Party Transaction [Line Items]
Number of shares issued		2,766,798
Price per share (in dollars per share)		$ 2.53