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Common Stock Warrants (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended |  |  |  |
--- | --- | --- | --- | --- | ---
Mar. 31, 2019 | Dec. 31, 2018 | Jul. 15, 2014 | May 12, 2014 | Apr. 30, 2014
Post-Reverse-Split Basis [Member] |  |  |  |  |
Class of Warrant or Right [Line Items] |  |  |  |  |
Warrants issued | 0.591 |  |  |  |
Warrant, shares | 111,463 |  |  |  |
Series B Preferred Stock [Member] |  |  |  |  |
Class of Warrant or Right [Line Items] |  |  |  |  |
Preferred stock, share issued | 0 | 0 |  |  |
Common Stock |  |  |  |  |
Class of Warrant or Right [Line Items] |  |  |  |  |
Warrants issued | 1,152,125 |  |  |  |
Warrant, exercise period | 5 years |  |  |  |
Warrant, expiration date | Jul. 15, 2019 |  |  |  |
Common Stock | Post-Reverse-Split Basis [Member] |  |  |  |  |
Class of Warrant or Right [Line Items] |  |  |  |  |
Warrants issued | 209,477 |  |  |  |
Exercise price of warrant | $ 10.18 |  |  |  |
Private Placement [Member] | Series B Preferred Stock [Member] |  |  |  |  |
Class of Warrant or Right [Line Items] |  |  |  |  |
Warrants issued | 2.00 |  |  |  |
Warrant, value | $ 700 |  |  |  |
Warrant, shares | 28,000 |  |  |  |
Preferred stock, share issued | 480,000 |  | 480,000 | 480,000 | 480,000
Private Placement [Member] | Series B Preferred Stock [Member] | Post-Reverse-Split Basis [Member] |  |  |  |  |
Class of Warrant or Right [Line Items] |  |  |  |  |
Warrants issued | 0.364 |  |  |  |
Private Placement [Member] | Common Stock |  |  |  |  |
Class of Warrant or Right [Line Items] |  |  |  |  |
Warrants issued | 3.25 |  |  |  |
Warrant, value | $ 700 |  |  |  |
Warrant, shares | 28,000 |  |  |  |

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- Definition Warrant Exercise Period + References No definition available. + Details
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- Definition Expiration date of warrants held. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Sentence Column A + Details
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- Definition 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 + Details
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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. + References No definition available. + Details
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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 -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(i)(2)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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- Definition Number 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)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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- Definition Total number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) issued to shareholders (includes related preferred shares that were issued, repurchased, and remain in the treasury). May be all or portion of the number of preferred shares authorized. Excludes preferred shares that are classified as debt. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -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 + Details
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- Definition Value of outstanding derivative securities that permit the holder the right to purchase securities (usually equity) from the issuer at a specified price. + 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)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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