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Compensation expense related to vesting of common stock.

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Estimated fair value of common stock per share.

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The number of milestones per the agreement.

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Represents the period during which the related party possess the exclusive right to manufacture the Company's discrete and embedded ST-MRAM devices developed pursuant to the agreement, after the completion of the relevant statement of work under which the device was developed.

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Represents the period during which the related party possess the exclusive right to manufacture the Company's discrete and embedded ST-MRAM devices developed pursuant to the agreement, after the qualification of the MRAM device for a particular technology node.

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The period of time the unvested common shares are subject to repurchase by the Company if the JDA is terminated for any reason, at a price that is the lower of the original price paid by GF or the fair value of the Company?s common stock as of the date of repurchase.

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The aggregate amount of receivables to be collected from related parties where one party can exercise control or significant influence over another party; including affiliates, owners or officers and their immediate families, pension trusts, and so forth, at the financial statement date. which are usually due within one year (or one business cycle).

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Carrying amount as of the balance sheet date of obligations due all related parties. For classified balance sheets, represents the current portion of such liabilities (due within one year or within the normal operating cycle if longer).

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Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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Cash payments to lessor's for use of assets under operating leases.

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Amount of acquisition of long-lived, physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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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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The aggregate costs incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, including the costs of developing computer software up to the point in time of achieving technological feasibility, and costs allocated in accounting for a business combination to in-process projects deemed to have no alternative future use.

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Amount of revenue, fees and commissions earned from transactions between (a) a parent company and its subsidiaries; (b) subsidiaries of a common parent; (c) an entity and trusts for the benefit of employees, for example, but not limited to, pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's management; (d) an entity and its principal, owners, management, or members of their immediate families; and (e) affiliates.

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The amount of consideration recognized during the period for the milestone or milestones.

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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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Per share or per unit amount of equity securities issued.

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Number of new stock issued during the period.

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Related Party Transactions (Details)					3 Months Ended		9 Months Ended		10 Months Ended	12 Months Ended
Related Party Transactions (Details)	Aug. 21, 2016 shares	Oct. 21, 2014 $ / shares shares	Oct. 17, 2014	Oct. 14, 2014	Sep. 30, 2017 USD ($) $ / shares shares	Sep. 30, 2016 USD ($)	Sep. 30, 2017 USD ($) item $ / shares shares	Sep. 30, 2016 USD ($)	Jun. 30, 2017 shares	Dec. 31, 2016 USD ($) $ / shares	Aug. 31, 2016 USD ($) item
Related Party Transactions
Loss on extinguishment of debt							$ (246,000)
Amounts due to related parties					$ 2,029,000		2,029,000			$ 1,359,000
Research and development expense					6,420,000	$ 3,111,000	19,236,000	$ 14,342,000
Non-cash compensation expense (income)							1,224,000	751,000
Due from related party					483,000		483,000			486,000
Freescale
Related Party Transactions
Amounts due to related parties					469,000		469,000			380,000
Rent paid					250,000	268,000	718,000	803,000
Processing costs capitalized in inventory					786,000	702,000	2,400,000	2,000,000
Related party sales					610,000	662,000	1,800,000	1,400,000
Due from related party					458,000		458,000			486,000
Freescale \| Wafers
Related Party Transactions
Product purchased which is included in inventory					317,000		708,000
Joint Development Agreement \| Global Foundries
Related Party Transactions
Amounts due to related parties					1,600,000		1,600,000			979,000
Purchase of research and development equipment					485,000		747,000			0
Research and development expense					850,000	480,000	$ 4,100,000	2,400,000
Agreement Term			4 years	4 years
Period to Repurchase Shares		1 year
Period of possession of exclusive right to manufacture after qualification of device			3 years
Period of possession of exclusive right to manufacture after completion of device development work			4 years
Number of milestones \| item											3
First milestone payment due per the agreement											$ 569,000
Second milestone payment due per the agreement											650,000
Third milestone payment due per the agreement											$ 406,000
Number of milestones achieved \| item							2
Milestone revenue					0	0	$ 1,200,000	0
Due from related party					$ 25,000		$ 25,000			$ 0
Joint Development Agreement \| Global Foundries \| Common Stock
Related Party Transactions
Number of shares sold \| shares		461,538
Shares sold, price per share \| $ / shares		$ 0.00026
Number of shares of common stock, vested \| shares	211,538								125,000
Number of shares of common stock, unvested \| shares					125,000		125,000
Estimated fair value of common stock per share \| $ / shares					$ 17.09		$ 17.09			$ 8.29
Joint Development Agreement \| Global Foundries \| Research and Development
Related Party Transactions
Non-cash compensation expense (income)					$ 508,000	$ (691,000)	$ 1,200,000	$ 751,000
Joint Development Agreement \| Global Foundries \| Series B Redeemable Convertible Preferred Stock
Related Party Transactions
Number of shares sold \| shares		192,307
Shares sold, price per share \| $ / shares		$ 26.00