STOCKHOLDERS' EQUITY - Employee Stock Incentive Plans - (Details) - USD ($) $ / shares in Units, $ in Thousands			6 Months Ended
	Jan. 25, 2017	Jan. 19, 2017	Jun. 30, 2017	Jan. 26, 2017	Dec. 30, 2016
STOCKHOLDERS' EQUITY
Shares issued to underwriters	3,450	3,000
Common stock, par value (in dollars per share)		$ 0.10	$ 0.10		$ 0.10
Additional shares available to purchase		450
Share Price	$ 44.50
Gross proceeds	$ 153,500
Proceeds from Issuance of Common Stock	143,900		$ 143,907
Line of Credit Facility, Maximum Borrowing Capacity			$ 350,000	$ 204,000	$ 78,600
Adjustments to Additional Paid in Capital, Stock Issued, Issuance Costs	$ 400