Document and Entity Information	3 Months Ended
	Mar. 31, 2014	May 07, 2014 Common Stock [Member]	May 07, 2014 Restricted Stock [Member]
Document Information [Line Items]
Entity Registrant Name	KNOLL INC
Entity Central Index Key	0001011570
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Document Type	10-Q
Document Period End Date	Mar. 31, 2014
Document Fiscal Year Focus	2014
Document Fiscal Period Focus	Q1
Amendment Flag	false
Entity Common Stock, Shares Outstanding		48,428,166	1,270,070