Stock-Based Compensation - Schedule of Restricted Stock Unit Award During End of the Period (Detail) - RSUs [Member]	3 Months Ended
	Apr. 01, 2017 $ / shares shares
Unvested RSUs:
Balance at beginning of fiscal year | shares	820,409
Shares, Granted | shares	0
Shares, Vested | shares	(61,856)
Shares, Forfeited | shares	(1,521)
Balance at end of period | shares	757,032
Shares, RSUs Expected to vest | shares	709,702
Vested RSUs:
Balance at beginning of fiscal year | shares	4,948
Shares,Vested | shares	61,856
Balance at end of period | shares	66,804
Weighted Average Grant Date Fair value per Share
Weighted Average Grant Date Fair value per Share,Beginning Balance | $ / shares	$ 25.69
Weighted Average Grant Date Fair value per Share, Granted | $ / shares	0
Weighted Average Grant Date Fair value per Share, Vested | $ / shares	27.58
Weighted Average Grant Date Fair value per Share, Forfeited | $ / shares	25.69
Weighted Average Grant Date Fair value per Share,Ending Balance | $ / shares	25.68
Weighted Average Grant Date Fair value per Share, RSUs Expected to vest | $ / shares	25.69
Vested RSUs:
Balance, beginning of period (per share) | $ / shares	25.69
Weighted Average Grant Date Fair value per Share, Vested | $ / shares	27.58
Balance, end of period (per share) | $ / shares	$ 27.44