Net Income Per Share (Tables)

9 Months Ended

Sep. 28, 2016

Earnings Per Share [Abstract]

Computation of Basic and Diluted Net Income per Share

Below are basic and diluted net income per share data for the periods indicated, which are in thousands except for per share data.  

	Thirteen Weeks Ended				Thirty-Nine Weeks Ended
	September 28, 2016		September 30, 2015		September 28, 2016		September 30, 2015
Numerator:
Net income	$	5,211	$	4,666	$	17,921	$	18,688
Denominator:
Weighted-average shares    outstanding—basic		38,415,189		38,275,317		38,331,400		37,837,610
Weighted-average shares    outstanding—diluted		39,083,577		39,107,241		39,020,127		39,044,388
Net income per share—basic	$	0.14	$	0.12	$	0.47	$	0.49
Net income per share—diluted	$	0.13	$	0.12	$	0.46	$	0.48
Anti-dilutive securities not considered in    diluted EPS calculation		451,325		—		451,325		—

Schedule of Reconciliation of Basic and Diluted Share Counts

Below is a reconciliation of basic and diluted share counts.

	Thirteen Weeks Ended				Thirty-Nine Weeks Ended
	September 28, 2016		September 30, 2015		September 28, 2016		September 30, 2015
Weighted-average shares outstanding—    basic		38,415,189		38,275,317		38,331,400		37,837,610
Dilutive effect of stock options and    restricted shares		668,388		831,924		688,727		1,206,778
Weighted-average shares outstanding—    diluted		39,083,577		39,107,241		39,020,127		39,044,388