Represents the percentage of stock awards vesting over the service period per year.

No definition available.

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- Definition

Represents the percentage of vesting of shares under option upon grant, as per the share-based compensation arrangement.

+ References

No definition available.

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- Definition

Represents the weighted average grant date fair value, used as an assumption in valuing an option.

+ References

No definition available.

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- Definition

Description of the period of time, from the grant date, after which the equity-based award expires.

+ References

No definition available.

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- Definition

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (h)(1)(i)

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph A240

-Subparagraph g(1)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef

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-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

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-Paragraph 64

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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-Paragraph 1

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-URI http://asc.fasb.org/extlink&oid=6793087&loc=d3e301413-122809

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- Definition

Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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- Definition

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

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- Definition

The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

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- Definition

The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

+ References

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- Definition

The weighted average fair value of nonvested awards on equity-based plans excluding option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or units.

+ References

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- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

+ References

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- Definition

The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

+ References

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- Definition

Expected term of share-based compensation awards, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SAB TOPIC 14.D.2)

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-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 14

-Section D

-Subsection 2

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- Definition

The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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- Definition

The risk-free interest rate assumption that is used in valuing an option on its own shares.

+ References

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- Definition

The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan.

+ References

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- Definition

Gross number of share options (or share units) granted during the period.

+ References

No definition available.

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- Definition

The number of shares reserved for issuance under stock option agreements awarded under the plan that validly exist and are outstanding as of the balance sheet date, including vested options.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph A240

-Subparagraph b(1)(b)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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-Topic 718

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-Subparagraph (c)(1)(i)-(ii)

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

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-Paragraph A240

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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- Definition

Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

+ References

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- Definition

Weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated.

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No definition available.

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Weighted average price at which grantees can acquire the shares reserved for issuance on stock options awarded.

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Stock-Based Compensation (Details) (USD $)	3 Months Ended			1 Months Ended	3 Months Ended			1 Months Ended		3 Months Ended
Stock-Based Compensation (Details) (USD $)	Mar. 30, 2013	Mar. 31, 2012	Jul. 31, 2007	Jul. 31, 2007 Stock option	Mar. 30, 2013 Stock option	Mar. 30, 2013 Stock option Maximum	Mar. 30, 2013 Stock option Minimum	Jul. 31, 2007 Stock option Employees	Jul. 31, 2007 Stock option Non-employees	Mar. 30, 2013 Restricted stock awards	Mar. 31, 2012 Restricted stock awards	Mar. 30, 2013 Restricted stock awards Maximum	Mar. 30, 2013 Restricted stock awards Minimum
Stock-Based Compensation
Maximum term of options granted				10 years
Vesting period of awards								4 years	3 years			1 year	4 years
Vesting of awards per year (as a percent)								25.00%	25.00%
Options granted, vesting percentage upon grant									25.00%
Shares of common stock available for issuance			2,000,000
Shares Under Option
Options outstanding at the beginning of the period (in shares)					1,174,250
Granted (in shares)					340,000
Cancelled (in shares)					(22,813)
Options outstanding at the end of the period (in shares)					1,491,437
Weighted Average Exercise Price
Options outstanding at the beginning of the period (in dollars per share)					$ 3.64
Granted (in dollars per share)					$ 0.67
Cancelled (in dollars per share)					$ 4.07
Options outstanding at the end of the period (in dollars per shares)					$ 2.95
Assumptions used in the Black-Scholes option-pricing model
Risk free interest rate (as a percent)						1.16%	0.88%
Dividend yield (as a percent)					0.00%
Expected volatility (as a percent)					56.00%
Expected term						6 years 3 months	5 years 6 months
Weighted average grant date fair value (in dollars per share)					$ 0.35
Number of Shares
Awards outstanding at the beginning of the period (in shares)										67,500
Granted (in shares)										60,000
Vested (in shares)										(22,500)
Awards outstanding at the end of the period (in shares)										105,000
Weighted Average Fair Value
Awards outstanding at the beginning of the period (in dollars per share)										$ 8.00
Granted (in dollars per share)										$ 0.79
Awards outstanding at the end of the period (in dollars per share)										$ 3.88
Stock-based compensation expense
Stock-based compensation expense (in dollars)	$ 142,000	$ 180,000								$ 51,000	$ 64,000