XML 116 R146.htm IDEA: XBRL DOCUMENT

Net Income Per Share - Narrative (Details) (USD $)	12 Months Ended
Net Income Per Share - Narrative (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Earnings Per Share [Abstract]
Stock options not included in the earnings per share calculation (shares)	800,674	820,706	1,029,577
Weighted Average Exercise Price (usd per share)	$ 21.32	$ 21.58	$ 22.57

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.

+ References+ Details