Condensed Consolidated Statements of Income (unaudited) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Income Statement [Abstract]
Premium equivalent amount	$ 99,407	$ 78,548	$ 289,243	$ 226,265

Premiums, fees for discount benefit plans and enrollment fees.

No definition available.

Name:	hiiq_PremiumEquivalentAmount
Namespace Prefix:	hiiq_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration