XML 54 R43.htm IDEA: XBRL DOCUMENT
v3.19.1

Common Stock Warrants - Summary of Warrants Outstanding (Details) | Dec. 31, 2018 $ / shares shares
--- | ---
No. of Shares, Total | shares | 1,718,184
Exercise Price | $ / shares | $ 3.04
Business Advisory Warrants [Member] |
No. of Shares, Total | shares | 600,000
Exercise Price | $ / shares | $ 0.01
Placement Agent Warrants - Series A Preferred [Member] |
No. of Shares, Total | shares | 704,184
Exercise Price | $ / shares | $ 3.00
Placement Agent Warrants - IPO [Member] |
No. of Shares, Total | shares | 414,000
Exercise Price | $ / shares | $ 7.50

X
- 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
Name: | us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

X
- 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
Name: | us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_StatementEquityComponentsAxis=ETON_BusinessAdvisoryWarrantsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementEquityComponentsAxis=ETON_PlacementAgentWarrantsSeriesAPreferredMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementEquityComponentsAxis=ETON_PlacementAgentWarrantsIPOMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |