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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.

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

-Publisher FASB

-Name Accounting Standards Codification

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-Paragraph A240

-Subparagraph g(1)

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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 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.

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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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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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- 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.

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- Definition

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

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- Definition

The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

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- Definition

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

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No definition available.

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- Definition

The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph A240

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- Definition

Weighted average price at which option holders acquired shares when converting their stock options into shares.

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No definition available.

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- Definition

Total number of shares issued during the period, including shares forfeited, as a result of Restricted Stock Awards.

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

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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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-Publisher AICPA

-Name Accounting Principles Board Opinion (APB)

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Share-Based Compensation (Details) (USD $)	3 Months Ended										12 Months Ended
Share-Based Compensation (Details) (USD $)	Mar. 31, 2013 Non-Executive Employee [Member]	Mar. 31, 2013 Stock Options [Member] Executive officers [Member]	Mar. 31, 2012 Stock Options [Member] Executive officers [Member]	Mar. 31, 2013 Stock Options [Member] Directors [Member]	Mar. 31, 2012 Stock Options [Member] Directors [Member]	Mar. 31, 2013 Stock Options [Member] Directors and Executive Officers [Member]	Mar. 31, 2012 Stock Options [Member] Directors and Executive Officers [Member]	Mar. 31, 2013 Stock Options [Member] Non-Executive Employee [Member]	Mar. 31, 2012 Restricted Stock Awards [Member] Executive officers [Member]	Mar. 31, 2013 Performance-Based Restricted Stock Awards [Member]	Dec. 31, 2012 Performance-Based Restricted Stock Awards [Member]
Stock Options [Abstract]
Options granted (in shares)						1,897,000	690,000	552,350
Vesting period		4 years	4 years	2 years	2 years			4 years
Options, grant date fair value (in dollars per share)	$ 1.64	$ 1.80	$ 2.10	$ 1.84	$ 1.35			$ 1.92
Exercisable fair value (in dollars per share)		$ 2.74		$ 1.49
Exercised (in dollars per share)						$ 5.00
Allocated share-based compensation expense						$ 3,235,000	$ 1,373,000	$ 974,000	$ 654,000	$ 70,000
Restricted Stock Award [Abstract]
Restricted stock issued during period (in shares)									190,000
Performance Based Restricted Stock Awards [Abstract]
Recognized compensation expense related to awards						$ 3,235,000	$ 1,373,000	$ 974,000	$ 654,000	$ 70,000
Performance-Based Restricted Stock Awards [Roll Forward]
Outstanding, Beginning Balance (in shares)										261,300
Granted (in shares)										0	276,375
Vested (in shares)										0
Cancelled/forfeited (in shares)										(109,746)
Outstanding, Ending Balance (in shares)										151,554	261,300
Vested (in shares)										0
Weighted Average Grant Date Fair Value [Roll Forward]
Outstanding - Weighted Average Grant Date Fair Value (in dollars per share)										$ 3.44
Cancelled/forfeited - Weighted Average Grant Date Fair Value (in dollars per share)										$ 3.44
Outstanding - Weighted Average Grant Date Fair Value (in dollars per share)										$ 3.04	$ 3.44