Share-Based Compensation (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended	9 Months Ended
Sep. 30, 2012	Sep. 30, 2012	Sep. 30, 2011
Certain information related to stock options and non-vested shares
Stock Options Number of Shares beginning balance	6,485	6,720
Stock Options Weighted Average Exercise Price Outstanding beginning balance	$ 4.87	$ 4.78
Restricted Stock Number of Shares beginning balance	502	801
Restricted Stock Weighted Average Grant Date Fair Value beginning balance	$ 5.66	$ 5.67
Stock Options Number of Shares Granted	500	500
Stock Options Weighted Average Exercise Price Granted	$ 3.51	$ 3.51
Restricted Stock Number of Shares Granted	650	650
Restricted Stock Weighted Average Grant Date Fair Value	$ 3.37	$ 3.37	$ 5.61
Stock Options Number of Shares Forfeited	(30)	(30)
Stock Options Weighted Average Exercise Price Forfeited	$ 4.70	$ 4.70
Restricted Stock Number of Shares Forfeited
Restricted Stock Weighted Average Grant Date Fair Value Forfeited
Stock Options Number of Shares Exercised	(50)	(285)
Stock Options Weighted Average Exercise Price Exercised	$ 2.31	$ 2.35
Restricted Stock Number of Shares Exercised
Restricted Stock Weighted Average Grant Date Fair Value Exercised
Stock Options Number of Shares Vested
Stock Options Weighted Average Exercise Price Vested
Restricted Stock Number of Shares Vested		(299)
Restricted Stock Weighted Average Grant Date Fair Value Vested		$ 5.69
Restricted Stock Number of Shares Expired
Restricted Stock Weighted Average Grant Date Fair Value Expired
Stock Options Number of Shares Expired	(1,575)	(1,575)
Stock Options Weighted Average Exercise Price Expired	$ 6.50	$ 6.50
Stock Options Number of Shares ending balance	5,330	5,330
Stock Options Weighted Average Exercise Price Outstanding ending balance	$ 4.29	$ 4.29
Stock Options Aggregate Intrinsic Value ending balance	$ 1,017	$ 1,017
Stock Options Weighted Average Remaining Term ending balance	3 years 2 months 12 days	3 years 2 months 12 days
Restricted Stock Number of Shares ending balance	1,152	1,152
Restricted Stock Weighted Average Grant Date Fair Value ending balance	$ 4.37	$ 4.37
Stock Options Number of Shares Exercisable	4,417	4,417
Stock Options Weighted Average Exercise Price Exercisable	$ 4.34	$ 4.34
Stock Options Aggregate Intrinsic Value Exercisable	$ 847	$ 847
Exercisable Stock Options Weighted Average Remaining Term	2 years 6 months	2 years 6 months

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

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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).

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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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Number of non-option equity instruments exercised by participants.

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Number of shares under non-option equity instrument agreements for which rights to exercise lapsed.

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Number of options or other stock instruments for which the right to exercise has lapsed under the terms of the plan agreements.

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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.

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

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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.

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

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Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of fully vested and expected to vest options that are exercisable.

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The number of exercisable share options (fully vested and expected to vest) that may be converted as of the balance sheet date.

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As of the balance sheet date, the weighted-average exercise price (at which grantees can acquire the shares reserved for issuance) for exercisable stock options that are fully vested or expected to vest.

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Weighted average remaining contractual term for fully vested and expected to vest options that are exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount of difference between fair value of the underlying shares reserved for issuance and exercise prices of fully vested and expected to vest options outstanding.

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Weighted average remaining contractual term for fully vested and expected to vest options outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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

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Weighted average price at which grantees could have acquired the underlying shares with respect to stock options of the plan that expired.

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

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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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Number of share options (or share units) exercised during the current period.

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Non vested shares weighted average grand date fair value.

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Non vested shares weighted average grant date fair value.

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