XML 47 R31.htm IDEA: XBRL DOCUMENT v3.6.0.2

Capital Stock (Tables)

12 Months Ended

Dec. 31, 2016

Equity [Abstract]

Schedule of Common Stock Reserved for Future Issuance

The Company has reserved for future issuance the following number of shares of common stock:

		As of December 31,
		2016				2015
Vesting of restricted stock			1,889				5,190
Options to purchase common stock			1,577,016				1,222,767
Common stock warrants			13,633,070				166,403
Total			15,211,975				1,394,360

X

- Definition

Schedule of shares of common stock reserved for future issuance.

+ References

No definition available.

+ Details

Name:	hsgx_ScheduleOfSharesOfCommonStockReservedForFutureIssuanceTableTextBlock
Namespace Prefix:	hsgx_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	us-gaap_EquityAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration