Property and Equipment - Additional Information (Details)	12 Months Ended
Dec. 31, 2015 USD ($)
Property Plant And Equipment [Abstract]
Retirement of fully depreciated property and equipment, gross	$ 1,066,246

Retirement of fully depreciated property and equipment.

No definition available.

Name:	htgm_RetirementOfFullyDepreciatedPropertyAndEquipment
Namespace Prefix:	htgm_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration