Stock-Based Compensation Stock Options Activity (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
Dec. 31, 2012
Share-based Compensation Arrangement by Share-based Payment Award
Options exercisable (in shares)	388
Options exercisable (in usd per share)	$ 21.85
Stock Options Outstanding Roll Forward
Under option, beginning	817
Options granted	1,440
Options exercised	0
Options forfeited or expired	(430)
Under option, ending	1,827
Weighted Average Exercise Price Roll Forward
Under option, beginning (in usd per share)	$ 18.73
Options granted (in usd per share)	$ 7.68
Options exercised (in usd per share)	$ 0.00
Options forfeited or expired (in usd per share)	$ 15.92
Under option, ending (in usd per share)	$ 10.68

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The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

+ References

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

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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.

+ References

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For presentations that combine terminations, 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 or that expired.

+ References

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Weighted average price of options that were either forfeited or expired.

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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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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

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

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- Definition

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

+ References

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