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v3.8.0.1

Subsequent Event - Additional Information (Details) - USD ($) | 1 Months Ended | 12 Months Ended
--- | --- | ---
Jan. 31, 2018 | Feb. 28, 2017 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Subsequent Event [Line Items] |  |  |  |  |
Proceeds from issuance of common stock |  |  | $ 10,160,000 | $ 57,000 | $ 171,000
Common Stock [Member] |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |
Sale of shares |  | 1,200,000 | 1,849,000 | 13,000 |
2015 ATM Agreement [Member] |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |
Proceeds from issuance of common stock |  |  | $ 600,000 | $ 56,000 |
2015 ATM Agreement [Member] | Common Stock [Member] |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |
Sale of shares |  |  | 110,252 | 10,365 | 0
Subsequent Event [Member] | 2015 ATM Agreement [Member] |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |
Proceeds from issuance of common stock | $ 2,300,000 |  |  |  |
Subsequent Event [Member] | 2015 ATM Agreement [Member] | Common Stock [Member] |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |
Sale of shares | 67,658 |  |  |  |

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- Definition The cash inflow from the additional capital contribution to the entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3255-108585 + Details
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- Definition Number of new stock issued during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=84159872&loc=d3e21463-112644 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(28)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 + Details
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- Definition 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. + References No definition available. + Details
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- Details
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- Details
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- Details
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