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Stockholders' Equity and Stock-Based Compensation (Tables)

12 Months Ended

Dec. 28, 2013

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Stock- Based Compensation

A summary of stock option activity under the stock award plans as of December 28, 2013 and changes during the twelve month period is as follows:

	2013
	Shares			Weighted Average Exercise Price
Balance, beginning of year	983,680			$	5.26
Options forfeited/canceled	(424,830	)		5.48
Options exercised	—			—
Balance, end of year	558,850			$	5.09
Exercisable, end of year	558,850

Stock Options Outstanding and Exercisable

The following table summarizes information about stock options outstanding and exercisable at December 28, 2013:

	Options Outstanding										Options Exercisable
Range of Exercise Prices	Number Outstanding				Weighted Average Remaining Contractual Life (Years)		Weighted Average Exercise Price				Number Exercisable				Weighted Average Exercise Price
$ 0.01—$ 3.50	130,000				2.00		$	3.49			130,000				$	3.49
$ 3.75—$ 4.82	328,850				1.00		4.23				328,850				4.23
$ 5.00—$ 8.03	—				2.23		5.40				—				5.40
$10.00—$10.00	100,000				1.00		10.00				100,000				10.00
	558,850				1.23		$	5.09			558,850				$	5.09
Aggregate intrinsic value on December 28, 2013	$	182,643									$	182,643

NonVested Restricted Common Stock

A summary of the activity for nonvested restricted common stock awards as of December 28, 2013 and changes during the twelve months then ended is presented below:

	Shares			Weighted Average Grant Fair Value
Balance, December 29, 2012	2,283,048			$	4.76
Granted	2,135,000			3.22
Forfeited	(227,000	)		3.87
Vested	(1,216,900	)		3.46
Balance, December 28, 2013	2,974,148			$	4.25

Stock-Based Compensation Expense

The following table summarizes stock-based compensation expense related to employee stock options and nonvested restricted common stock awards for the fiscal years 2013, 2012 and 2011 (no tax benefits were recognized):

	2013				2012				2011
Cost of product revenues	$	414,842			$	513,789			$	613,274
Research and development	423,548				366,443				577,514
Selling, general and administrative	3,365,018				3,606,758				2,732,840
Total	$	4,203,408			$	4,486,990			$	3,923,628

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Tabular disclosure of the allocation of equity-based compensation costs to a given line item on the balance sheet and income statement for the period. This may include the reporting line for the costs and the amount capitalized and expensed.

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Tabular disclosure of the changes in outstanding nonvested shares.

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Tabular disclosure of the number of fully vested share options (or share units) and share options expected to vest at the date of the latest statement of financial position, weighted-average exercise price (or conversion ratio), aggregate intrinsic value (except for nonpublic entities), and weighted-average remaining contractual term for both options (or share units) currently outstanding and options (or share units) exercisable (or convertible).

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