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Earnings (Loss) per Share Level 1 (Notes) | 12 Months Ended
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Dec. 31, 2015
Earnings Per Share [Abstract] |
Earnings (Loss) Per Common Share |
[1] | For additional information, see Note 13 - Equity and Note 17 - Stock Compensation Plans of Notes to Consolidated Financial Statements.
Basic earnings per share is computed based on the weighted average number of common shares outstanding during the year. Diluted earnings per share includes the dilutive effect of assumed exercise or issuance of warrants and stock-based awards under compensation plans, and assumed conversion of preferred shares to common using the treasury stock method. Diluted potential common shares are included in the calculation of diluted per share amounts provided there is income from continuing operations, net of tax. Under the treasury stock method, for warrants and stock-based awards, shares are assumed to be issued and then reduced for the number of shares repurchaseable with theoretical proceeds at the average market price for the period. Contingently issuable shares are included for the number of shares issuable assuming the end of the reporting period was the end of the contingency period, if dilutive. Under the if-converted method for mandatory convertible preferred stock the conversion to common shares is assumed if the inclusion of these shares and the related dividend adjustment are dilutive to the earnings per share calculation.

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