Capital Stock (Narratives) (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended	9 Months Ended	153 Months Ended
Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012
Capital Stock Disclosure [Abstract]
Share-based Compensation Arrangement by Share-based Payment Award, Discount from Market Price, Offering Date			85.00%
Employee Stock Purchase Plan Shares Authorized	500,000		500,000		500,000
Stock issued during the year, Shares, Employee Stock Purchase Plans	0	0	25,597	22,587	435,972
Equity Instruments Other than Options, Grants in Period			349,295
Options, Grants in Period, Gross	0	0	1,210,934
Options, Grants in Period, Weighted Average Grant Date Fair Value			$ 1.84
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period, Maximum			4 years
Deferred Compensation Arrangement with Individual, Maximum Contractual Term			10 years
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	8,644,009	4,006,054	4,643,163	3,469,499
Employee Service Share-based Compensation, Allocation of Recognized Period Costs, Capitalized Amount	$ 0	$ 0	$ 0	$ 0

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Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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The maximum term of the deferred compensation arrangement.

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

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The maximum vesting term over 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.

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The discount rate from market value on offering date that participants pay for shares.

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

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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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Number of shares issued during the period as a result of an employee stock purchase plan.

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