Quarterly report pursuant to Section 13 or 15(d)

Cover
- Document And Entity Information
Financial Statements
Notes to Financial Statements
Accounting Policies
- Organization and Summary of Significant Accounting Policies (Policies)
Notes Tables
Notes Details

Debt Agreements (Details Textual)

v3.10.0.1

Debt Agreements (Details Textual) - USD ($) $ / shares in Units, $ in Thousands		1 Months Ended			3 Months Ended		9 Months Ended
	Feb. 02, 2018	Sep. 25, 2018	Mar. 21, 2018	Jul. 27, 2017	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Debt Instrument [Line Items]
Deemed Dividend On Trigger Down Round Provision		$ 300			$ 285	$ 0	$ 285	$ 0
Horizon Technology Finance Corporation [Member]
Debt Instrument [Line Items]
Class of Warrant or Right, Exercise Price of Warrants or Rights				$ 1.96
Class of Warrant or Right, Number of Securities Called by Warrants or Rights				550,000
Venture Loan [Member]
Debt Instrument [Line Items]
Debt Instrument, Final Payment on Each Loan Tranche,Percentage				5.00%
Early Repayment of Subordinated Debt	$ 3,000
Long-term Debt	$ 7,000
Venture Loan [Member] \| Horizon Technology Finance Corporation [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount				$ 7,000
Debt Instrument, Maturity Date				Dec. 31, 2018
Debt Instrument, Term				46 months
Molteni Loan [Member]
Debt Instrument [Line Items]
Long-term Debt			$ 4,000
Conversion of Debt to Equity Description			In addition, Molteni has the right to convert its portion of the debt into shares of our common stock at a conversion price of $1.20 per share and is required to effect this conversion of debt to equity if we complete an equity financing resulting in gross proceeds of at least $10.0 million at a price per share of common stock in excess of $1.20 and repay the $1.6 million balance of Horizon’s loan amount.
Proceeds from Subordinated Short-term Debt			$ 2,400
New Horizon Warrants [Member]
Debt Instrument [Line Items]
Class of Warrant or Right, Exercise Price of Warrants or Rights		$ 0.25	$ 1.20
Class of Warrant or Right, Number of Securities Called by Warrants or Rights		2,200,000	40,000

- Definition

The description of effect of conversion of debt to equity during the period.

+ References

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- Definition

Represents the percentage rate of final payment on each loan tranche.

+ References

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- Definition

Amount of deemed dividend on trigger of down round provision.

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- Definition

Exercise price per share or per unit of warrants or rights outstanding.

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Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares.

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Face (par) amount of debt instrument at time of issuance.

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- Definition

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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- Definition

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

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- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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- Definition

The cash outflow from the repayment of long-term borrowing where a lender is placed in a lien position behind debt having a higher priority of repayment (senior) in case of liquidation of the entity's assets before its maturity.

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- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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- Definition

The cash inflow from an obligation which places a lender in a lien position behind debt having a higher priority of repayment (senior loan) in liquidation of the entity's assets scheduled to be repaid within one year or in the normal operating cycle of the entity, if longer.

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