Stock-Based Compensation (Tables)

6 Months Ended

Jul. 03, 2015

Disclosure of Compensation Related Costs, Share-based Payments [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				Six Months Ended
	July 3, 2015		July 4, 2014		July 3, 2015		July 4, 2014
Employee stock options	$	555	$	675	$	1,193	$	1,472
Restricted stock		63		232		307		525
Restricted stock units		154		764		274		1,152
Nonemployee stock options		57		12		49		34
Total	$	829	$	1,683	$	1,823	$	3,183

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

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

	Three Months Ended				Six Months Ended
	July 3, 2015		July 4, 2014		July 3, 2015		July 4, 2014
Cost of sales	$	6	$	39	$	23	$	77
General and administrative		548		1,033		1,124		1,970
Marketing and selling		104		306		355		580
Research and development		171		305		321		556
Total stock compensation expense		829		1,683		1,823		3,183
Amounts capitalized as part of inventory		129		71		251		149
Total	$	958	$	1,754	$	2,074	$	3,332

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						Six Months Ended
	July 3, 2015			July 4, 2014			July 3, 2015			July 4, 2014
Expected dividend yield		0	%		0	%		0	%		0	%
Expected volatility		57	%		56	%		57	%		55	%
Risk-free interest rate		1.42	%		1.30	%		1.61	%		1.29	%
Expected term (in years)		5.54			4.12			5.61			4.12

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

A summary of option activity under the Plan for the period ended July 3, 2015 is presented below:

	Options Shares (000’s)
Outstanding at January 2, 2015		3,175
Granted		814
Exercised		(424)
Forfeited or expired		(101)
Outstanding at July 3, 2015		3,464
Exercisable at July 3, 2015		2,144

Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity [Table Text Block]

summary of restricted stock and restricted stock unit’s activity under the Plan for the period ended July 3, 2015 is presented below:

	Restricted Shares (000’s)		Restricted Units (000’s)
Outstanding at January 2, 2015		247		156
Granted		—		101
Exercised		(125)		(10)
Forfeited		(15)		(27)
Outstanding at July 3, 2015		107		220