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Net Income Per Common Share (Details 1) (Employee Stock Option [Member], USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Employee Stock Option [Member]
Schedule of antidilutive securities excluded from computation of earnings per share
Number of shares (shares)	109,068	109,068	109,068	169,638
Range of exercise prices, Maximum (usd per share)	$ 30.63	$ 30.63	$ 30.63	$ 30.63
Range of exercise prices, Minimum (usd per share)	$ 29.57	$ 29.57	$ 29.57	$ 19.14

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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