STOCK REPURCHASE PROGRAM (Details) - USD ($)	2 Months Ended	3 Months Ended		6 Months Ended
	Dec. 31, 2018	Jun. 29, 2019	Apr. 29, 2018	Jun. 29, 2019	Apr. 29, 2018	Mar. 07, 2018	Oct. 10, 2017	Sep. 08, 2016
Class of Stock [Line Items]
Payments for repurchase of common stock				$ 0	$ 46,705,000
Available for stock repurchases		$ 55,600,000		$ 55,600,000
Shares withheld to satisfy minimum tax withholding obligations				22,000	200,000
Retirement of treasury stock previously withheld or repurchased (in shares)				100,000	2,900,000
2016 Stock Repurchase Program
Class of Stock [Line Items]
Authorized stock repurchase amount								$ 50,000,000.0
2017 Stock Repurchase Program
Class of Stock [Line Items]
Authorized stock repurchase amount							$ 50,000,000.0
2018 Stock Repurchase Program
Class of Stock [Line Items]
Authorized stock repurchase amount						$ 50,000,000.0
Stock Repurchase Programs
Class of Stock [Line Items]
Treasury stock purchases (in shares)				0	2,700,000
Payments for repurchase of common stock					$ 46,700,000
Additional Paid-In Capital
Class of Stock [Line Items]
Retirement of treasury stock previously withheld or repurchased				$ 600,000	$ 51,300,000
Treasury Stock
Class of Stock [Line Items]
Treasury stock purchases (in shares)	347,040	2,399	104	22,112	2,917,034
Retirement of treasury stock previously withheld or repurchased				$ (600,000)	$ (51,300,000)
CDR Fund VIII Investor Group | Secondary Offering
Class of Stock [Line Items]
Treasury stock purchases (in shares)					1,150,000
Payments for repurchase of common stock					$ 22,300,000