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Net Earnings Per Share	12 Months Ended
Net Earnings Per Share	Dec. 31, 2011
Net Earnings Per Share [Abstract]
Net Earnings Per Share	E. NET EARNINGS PER SHARE: Earnings per share was calculated using the two-class method, which is an earnings allocation formula that determines earnings per share for common shareholders and each participating security according to dividends declared and participation rights in undistributed earnings.

- Definition

The entire disclosure for earnings per share.

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