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Subsequent event (Detail Textuals) - Subsequent event - Private placement - One institutional investor - Securities purchase agreement	Nov. 01, 2018 USD ($) $ / shares shares
Subsequent Event [Line Items]
Amount of aggregate principal securities sold under private placement | $	$ 7,500,000
Number of investor warrant issued to purchase | shares	800,000
Investor warrants exercise price | $ / shares	$ 6.53
Term of note matures	17 months
Interest rate	10.00%
Net proceeds from the private placement | $	$ 6,800,000
Senior convertible note
Subsequent Event [Line Items]
Amount of aggregate principal securities sold under private placement | $	$ 7,500,000
Number of aggregate principal securities sold under private placement | shares	1,198,084
Sale of stock, price per share | $ / shares	$ 6.26
Placement agent warrants
Subsequent Event [Line Items]
Number of investor warrant issued to purchase | shares	119,808
Investor warrants exercise price | $ / shares	$ 7.183
Percentage of warrants issued to purchase note	10.00%
Term of placement agent warrants	4 years

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- Definition

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+ References

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Information about term of placement agent warrants. Period of time between issuance and maturity of warrant, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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

+ References

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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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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-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
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-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

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

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The cash inflow associated with the amount received from entity's raising of capital via private rather than public placement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3255-108585

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Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

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