Net Income (Loss) Per Share (Tables)

9 Months Ended

Sep. 26, 2018

Earnings Per Share [Abstract]

Computation of Basic and Diluted Net Income (Loss) per Share

Below are basic and diluted net income (loss) per share data for the periods indicated, which are in thousands except for per share data:  

	Thirteen Weeks Ended					Thirty-Nine Weeks Ended
	September 26, 2018		September 27, 2017			September 26, 2018		September 27, 2017
Numerator:
Net income (loss)	$	6,835	$	(4,039	)	$	14,416	$	8,657
Denominator:
Weighted-average shares    outstanding—basic	38,602,658		38,462,100			38,516,792		38,449,453
Weighted-average shares    outstanding—diluted	39,205,090		38,462,100			39,102,130		39,101,214
Net income (loss) per share—basic	$	0.18	$	(0.11	)	$	0.37	$	0.23
Net income (loss) per share—diluted	$	0.17	$	(0.11	)	$	0.37	$	0.22
Anti-dilutive securities not considered in    diluted EPS calculation	557,300		2,490,029			671,565		749,421

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 26, 2018	September 27, 2017	September 26, 2018	September 27, 2017
Weighted-average shares outstanding—    basic	38,602,658	38,462,100	38,516,792	38,449,453
Dilutive effect of stock options and    restricted shares	602,432	—	585,338	651,761
Weighted-average shares outstanding—    diluted	39,205,090	38,462,100	39,102,130	39,101,214