Stock-Based Compensation (Tables)

9 Months Ended

Oct. 03, 2014

Stockholders' Equity Note [Abstract]

Schedule Of Compensation Cost [Table Text Block]

The cost that has been charged against income for stock-based compensation is set forth below (in thousands):

	Three Months Ended				Nine Months Ended
	October 3, 2014		September 27, 2013		October 3, 2014		September 27, 2013
Employee stock options	$	666	$	576	$	2,138	$	2,068
Restricted stock		141		283		666		718
Restricted stock units		705		—		1,857		—
Nonemployee stock options		41		47		75		138
Total	$	1,553	$	906	$	4,736	$	2,924

Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block]

The Company recorded stock-based compensation expense in the following categories on the accompanying condensed consolidated statements of operations (in thousands):

	Three Months Ended				Nine Months Ended
	October 3, 2014		September 27, 2013		October 3, 2014		September 27, 2013
General and administrative	$	869	$	506	$	2,925	$	1,912
Marketing and selling		326		211		906		593
Research and development		358		189		905		419
Total	$	1,553	$	906	$	4,736	$	2,924

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]

The risk-free rate is based on the U.S. Treasury yield curve corresponding to the expected term at the time of the grant.

	Three Months Ended						Nine Months Ended
	October 3, 2014			September 27, 2013			October 3, 2014			September 27, 2013
Expected dividend yield		0	%		0	%		0	%		0	%
Expected volatility		56.24	%		58.43	%		55.47	%		71.69	%
Risk-free interest rate		1.36	%		1.32	%		1.29	%		0.69	%
Expected term (in years)		4.12			4.12			4.12			4.12

Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]

A summary of option activity under the Plan as of October 3, 2014 is presented below:

	Options Shares (000’s)
Outstanding as of January 3, 2014		3,299
Granted		614
Exercised		(593)
Forfeited or expired		(93)
Outstanding as of October 3, 2014		3,227
Exercisable as of October 3, 2014		2,098

A summary of restricted stock and restricted stock units activity under the Plan for the period ending October 3, 2014 is presented below:

	Restricted Shares (000’s)		Restricted Units (000’s)
Outstanding as of January 3, 2014		341		135
Granted		65		304
Vested		(140)		(135)
Forfeited or expired		(19)		(15)
Outstanding as of October 3, 2014		247		289