Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2019	Aug. 01, 2019
Entity Registrant Name	Boxwood Merger Corp.
Entity Central Index Key	0001751143
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Document Type	10-Q
Document Period End Date	Jun. 30, 2019
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q2
Entity Current Reporting Status	Yes
Entity Small Business	true
Entity Shell Company	true
Entity Emerging Growth Company	true
Entity File Number	001-38745
Entity Ex Transition Period	false
Entity Filer Category	Non-accelerated Filer
Entity Interactive Data Current	Yes
Entity Incorporation State Country Code	DE
Class A Common Stock [Member]
Entity Common Stock, Shares Outstanding		20,250,000
Common Class F [Member]
Entity Common Stock, Shares Outstanding		5,000,000