STOCKHOLDERS' EQUITY - Changes in award shares outstanding - (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 29, 2017	Dec. 30, 2016	Jan. 01, 2016
Performance shares
Change in Restricted shares
Balance in beginning of the period (in shares)	55
Granted (in shares)	42
Vested or Exercised (in shares)	(38)
Forfeitures (in shares)	(1)
Balance at the end of the period (in shares)	58	55
Changes in Restricted Stock, Wtd Avg Grant Price
Balance at the beginning of the period (in dollars per share)	$ 36.03
Granted (in dollars per share)	49.05
Vested or exercised (in dollars per share)	41.62
Forfeited (in dollars per share)	36.03
Balance at the end of the period (in dollars per share)	$ 43.35	$ 36.03
Restricted shares
Change in Restricted shares
Balance in beginning of the period (in shares)	158
Granted (in shares)	46
Vested or Exercised (in shares)	(85)
Forfeitures (in shares)	(6)
Balance at the end of the period (in shares)	113	158
Changes in Restricted Stock, Wtd Avg Grant Price
Balance at the beginning of the period (in dollars per share)	$ 34.93
Granted (in dollars per share)	50.35
Vested or exercised (in dollars per share)	32.53
Forfeited (in dollars per share)	38.70
Balance at the end of the period (in dollars per share)	$ 41.80	$ 34.93
Option awards
Changes in option awards outstanding, Shares
Balance at the beginning of the period (in shares)	501
Granted (in shares)	42
Vested or Exercised (in shares)	(219)
Forfeited (in shares)	(16)
Balance at the end of the period (in shares)	308	501
Changes in option awards, Wtd Avg Ex. Price
Balance at the beginning of the period (in dollars per share)	$ 27.69
Granted (in dollars per share)	49.05
Vested or Exercised (in dollars per share)	23.99
Forfeited (in dollars per share)	(33.20)
Balance at the end of the period (in dollars per share)	$ 32.93	$ 27.69
Aggregate intrinsic value - Outstanding	$ 6,905
Aggregate intrinsic value - Exercisable	4,868
Total intrinsic value exercised	$ 6,868	$ 442	$ 171