Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2016	Aug. 05, 2016
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	Jun. 30, 2016
Document Fiscal Year Focus	2016
Document Fiscal Period Focus	Q2
Amendment Flag	false
Common Stock
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		49,113,671
Restricted stock
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		1,042,129