Document And Entity Information - shares	6 Months Ended
	Jun. 30, 2015	Aug. 13, 2015
Document and Entity Information [Abstract]
Entity Registrant Name	Harmony Merger Corp.
Entity Central Index Key	0001612720
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Document Type	10-Q
Document Period End Date	Jun. 30, 2015
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	Q2
Entity Filer Category	Non-accelerated Filer
Entity Common Stock, Shares Outstanding		15,084,750