Represents the amount of stock-based compensation expense that resulted from the remeasurement of awards.

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- Definition

Number of shares of common stock each restricted stock award entitles the holder to receive upon completion of a specific period of service or achievement of a specified milestone.

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No definition available.

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As of the balance sheet date, the number of shares into which fully vested and expected to vest stock options outstanding can be converted under the other than option plan.

+ References

No definition available.

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- Definition

Represents the number of outstanding stock options deemed to be granted outside the entity's incentive plans as of the balance sheet date.

+ References

No definition available.

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- Definition

Weighted average grant price of other than options instruments expected to vest.

+ 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

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- Definition

Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

Aggregate unrecognized cost of share-based awards, other than options, made to employees under an equity-based compensation plan, that have yet to vest.

+ References

No definition available.

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Estimated period over which an employee is required to provide service in exchange for the equity-based payment award, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

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

+ References

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- Definition

Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.

+ 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).

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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.

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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.

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

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The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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Stock Based Compensation (Details 5) (Restricted stock units, USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Stock Based Compensation disclosures
Number of common shares each award holder is entitled to receive			1
Number of outstanding stock options deemed to be granted outside the Company's incentive plans (in shares)	0		0
Number of RSUs
Outstanding, beginning balance (in shares)			215,525
Granted (in shares)			53,730
Released (in shares)			(147,878)
Forfeited (in shares)			(15,833)
Outstanding, ending balance (in shares)	105,544		105,544
Expected to Vest (in shares)	103,845		103,845
Weighted Average Grant Price
Outstanding weighted average grant price (in dollars per share)			$ 6.26
Granted (in dollars per share)			$ 6.67
Released (in dollars per share)			$ 6.48
Forfeited (in dollars per share)			$ 5.90
Outstanding weighted average grant price (in dollars per share)	$ 6.24		$ 6.24
Expected to Vest (in dollars per share)	$ 6.24		$ 6.24
Allocated share-based compensation expense	$ 0.2	$ 0.1	$ 1.6	$ 0.8
Stock-based compensation expense that resulted from the remeasurement of awards			1.0
Unrecognized compensation expense related to unvested RSU's	0.3		0.3
Expected weighted average period for recognizing unrecognized compensation expense			3 months 18 days
General and administrative expenses
Weighted Average Grant Price
Allocated share-based compensation expense	0.1		0.7	0.5
Research and development expenses
Weighted Average Grant Price
Allocated share-based compensation expense	$ 0.1	$ 0.1	$ 0.9	$ 0.3
Minimum
Stock Based Compensation disclosures
Requisite service period of RSUs			1 year
Maximum
Stock Based Compensation disclosures
Requisite service period of RSUs			3 years