DOCUMENT AND ENTITY INFORMATION - shares	3 Months Ended
	Mar. 31, 2020	Apr. 29, 2020
Cover [Abstract]
Entity Registrant Name	Rosetta Stone Inc
Entity Central Index Key	0001351285
Trading Symbol	RST
Document Type	10-Q
Document Period End Date	Mar. 31, 2020
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Entity Current Reporting Status	Yes
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding (in shares)		24,576,366
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q1
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	04-3837082
Entity File Number	1-34283
Entity Address Line One	1621 North Kent Street
Entity Address, Address Line Two	Suite 1200
Entity Address City	Arlington
Entity Address State	VA
Entity Address, Postal Zip Code	22209
City Area Code	703
Local Phone Number	387-5800
Entity Interactive Data Current	Yes
Title of 12(b) Security	Common Stock, par value $0.00005 per share
Security Exchange Name	NYSE
Document Quarterly Report	true
Document Transition Report	false