Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2021	Jul. 31, 2021
Cover [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2021
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q2
Entity Registrant Name	LENSAR, INC.
Entity Central Index Key	0001320350
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Current Fiscal Year End Date	--12-31
Entity Filer Category	Non-accelerated Filer
Entity Common Stock, Shares Outstanding		10,956,688
Entity Shell Company	false
Entity Small Business	true
Entity Emerging Growth Company	true
Entity Ex Transition Period	false
Title of 12(b) Security	Common Stock, par value $0.01 per share
Trading Symbol	LNSR
Security Exchange Name	NASDAQ
Entity File Number	001-39473
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	32-0125724
Entity Address, Address Line One	2800 Discovery Drive
Entity Address, City or Town	Orlando
Entity Address, State or Province	FL
Entity Address, Postal Zip Code	32826
City Area Code	888
Local Phone Number	536-7271
Document Quarterly Report	true
Document Transition Report	false