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Deferred and Restricted Stock Activity (Detail) - Deferred and restricted stock - $ / shares shares in Thousands	12 Months Ended
	Dec. 28, 2019	Dec. 29, 2018	Dec. 30, 2017
Number of Shares
Number of Shares, Balance at beginning of period	66	87	149
Number of Shares, Granted	49	78	87
Number of Shares, Vested	(66)	(99)	(149)
Number of shares, Balance at end of period	49	66	87
Number of shares, Vested and deferred at end of period	197	198	192
Weighted Average Fair Value
Weighted Average Fair Value, Balance at beginning of period	$ 19.93	$ 18.70	$ 20.39
Weighted Average Fair Value, Granted	22.31	19.90	18.70
Weighted Average Fair Value, Vested	19.93	18.70	20.39
Weighted Average Fair Value, Balance at end of period	$ 22.31	$ 19.93	$ 18.70

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