The number of equal monthly installments principal payments will be repaid in, under the debt instrument.

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- Definition

The number of equal monthly installments principal payments will be repaid in, when compliant with certain financial milestones, under the debt instrument.

+ References

No definition available.

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- Definition

Prepayment fee under the debt instrument expressed as a percentage of the principal amount of the prepaid amount.

+ References

No definition available.

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- Definition

Variable rate used on the debt instrument if greater than the thirty day LIBOR rate.

+ References

No definition available.

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- Definition

Amount of amortization expense attributable to debt discount (premium) and debt issuance costs.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28555-108399

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- Definition

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

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(i)(4))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

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- Definition

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.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

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- Definition

Amount of the fee that accompanies borrowing money under the debt instrument.

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-Topic 210
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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

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- Definition

Amount of unamortized debt discount (premium) and debt issuance costs.

+ References

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- Definition

Amount of the cost of borrowed funds accounted for as interest expense for debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition

The cash inflow during the period from additional borrowings in aggregate debt. Includes proceeds from short-term and long-term debt.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
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-Paragraph 14
-Subparagraph (b)
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Value of outstanding derivative securities that permit the holder the right to purchase securities (usually equity) from the issuer at a specified price.

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-SubTopic 10
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Note 7 - Debt Financing (Details Textual)	1 Months Ended		3 Months Ended
Note 7 - Debt Financing (Details Textual)	Aug. 31, 2017 USD ($) $ / shares shares	Jan. 31, 2014 USD ($)	Mar. 31, 2018 USD ($)	Mar. 31, 2017 USD ($)
Amortization of Debt Issuance Costs and Discounts, Total			$ 124,000	$ 33,000
Warrants Issued in Connection with Loan and Security Agreement 2 [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights \| shares	277,778
Class of Warrant or Right, Exercise Price of Warrants or Rights \| $ / shares	$ 1.62
Warrants and Rights Outstanding	$ 227,000
Loan and Security Agreement [Member]
Proceeds from Issuance of Debt		$ 3,500,000
Debt Instrument, Interest Rate, Stated Percentage		7.34%
Debt Instrument, Fee Amount		$ 271,250
Amortization of Debt Issuance Costs and Discounts, Total				13,000
Interest Expense, Debt, Total				$ 33,000
Loan and Security Agreement 2 [Member]
Proceeds from Issuance of Debt	15,000,000
Debt Instrument, Fee Amount	$ 1,200,000
Amortization of Debt Issuance Costs and Discounts, Total			40,000
Interest Expense, Debt, Total			400,000
Debt Instrument, Variable Rate	0.99%
Debt Instrument, Basis Spread on Variable Rate	7.26%
Debt Instrument, Number of Equal Monthly Installments	35
Debt Instrument, Number of Equal Monthly Installments When Compliant with Certain Financial Milestones	23
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net, Total			500,000
Long-term Debt, Total			$ 15,000,000
Loan and Security Agreement 2 [Member] \| Minimum [Member]
Debt Instrument, Prepayment Fee, Percentage	0.50%
Loan and Security Agreement 2 [Member] \| Maximum [Member]
Debt Instrument, Prepayment Fee, Percentage	2.00%