Warrants - Additional Information (Details) - $ / shares	6 Months Ended
Jun. 30, 2017	Jun. 30, 2016
Warrants
Class Of Warrant Or Rights Date From Which Warrants Or Rights Expired	Apr. 17, 2021
Warrants exercised	0	0
Warrants for Common Stock
Warrants
Number of shares callable by warrants	18,939
Warrants for Common Stock \| Weighted Average
Warrants
Weighted average exercise price to purchase common stock	$ 7.92

Class of warrant or rights date from which warrants or rights expired.

No definition available.

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- Definition

Warrant Exercised

+ References

No definition available.

+ Details

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-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://www.xbrl.org/2003/role/presentationRef
-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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- Details

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