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Warrants (Detail)	12 Months Ended
	Dec. 31, 2017 $ / shares shares
Stock Warrants
Number of Shares Underlying Warrants | shares	804,139
Exercise price | $ / shares	$ 1.20
Expiration date	Mar. 17, 2019
Warrant One [Member]
Number of Shares Underlying Warrants | shares	240,444
Exercise price | $ / shares	$ 0.7875
Expiration date	Sep. 24, 2020

X

- Definition

Exercise price of the warrants.

+ 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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X

- Definition

Stock exceeds the exercise price of options outstanding.

+ References

No definition available.

+ Details

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X

- Definition

Share based compensation arrangement by share based payment award non option equity instrument expiration date.

+ References

No definition available.

+ Details

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- Details

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X

- Details

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