COMMON STOCK - Nonvested Restricted Shares Awards (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
Dec. 29, 2018	Dec. 30, 2017	Dec. 31, 2016	Dec. 26, 2015
Restricted Awards
Nonvested, beginning balance (in shares)	1,033,626	791,532	623,748
Granted (in shares)	247,068	388,248	350,892
Vested (in shares)	(107,865)	(141,111)	(180,465)
Forfeited (in shares)	(12,750)	(5,043)	(2,643)
Nonvested, ending balance (in shares)	1,160,079	1,033,626	791,532	623,748
Weighted Average Grant Date Fair Value
Nonvested, beginning balance (in dollars per share)	$ 24.24	$ 19.32	$ 13.66
Granted (in dollars per share)	36.52	32.03	23.96
Vested (in dollars per share)	18.11	12.71	15.66
Forfeited (in dollars per share)	24.19	30.14	21.45
Nonvested, ending balance (in dollars per share)	$ 23.32	$ 24.24	$ 19.32	$ 13.66
Unrecognized Compensation Expense
Nonvested restricted awards, unrecognized compensation expense	$ 7.6	$ 7.1	$ 4.8	$ 5.2
Nonvested restricted awards, weighted-average period to recognize expense	1 year 1 month 13 days	1 year 3 months 22 days	1 year 6 months 4 days	2 years 6 months 11 days

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Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Unrecognized cost of unvested share-based awards, other than options, awarded to employees as compensation.

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- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

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Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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The weighted average fair value of nonvested awards on equity-based plans excluding option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or units.

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The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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