Basic and Diluted Net Income (Loss) Per Share (Tables)

12 Months Ended

Dec. 28, 2018

Earnings Per Share [Abstract]

Summary of Computation of Basic and Diluted Net Income (Loss) Per Share

The following table sets forth the computation of basic and diluted net income (loss) per share (in thousands except per share amounts):

	Years Ended
	2018			2017			2016
Numerator:
Net income (loss)	$	4,968		$	(2,139	)	$	(12,129	)
Denominator:
Weighted average common shares:
Common shares outstanding		42,598			41,025			40,352
Less:  Unvested restricted stock		(11	)		(21	)		(23	)
Denominator for basic calculation		42,587			41,004			40,329
Weighted average effects of potentially diluted common stock:
Stock options		2,360			—			—
Unvested restricted stock		10			—			—
Restricted stock units		300			—			—
Denominator for diluted calculation		45,257			41,004			40,329
Net income (loss) per share:
Basic	$	0.12		$	(0.05	)	$	(0.30	)
Diluted	$	0.11		$	(0.05	)	$	(0.30	)

Schedule of Anti-dilutive Securities Excluded from Computation of Earnings Per Share

The following table sets forth (in thousands) the weighted average number of options to purchase shares of common stock, restricted stock, and restricted stock units with either exercise prices or unrecognized compensation cost per share greater than the average market price per share of the Company’s common stock, which were not included in the calculation of diluted per share amounts because the effects would be anti-dilutive.

	Years Ended
	2018		2017		2016
Stock options		315		2,237		4,069
Restricted stock and restricted stock units		—		203		76
Total		315		2,440		4,145