XML 51 R27.htm IDEA: XBRL DOCUMENT

Summary of Significant Accounting Policies - Common Stock Stock Options Excluded as Anti-Dilutive from Determination of Diluted Earnings Per Share (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Earnings Per Share [Abstract]
Weighted average anti-dilutive stock options	115	115	115	135
Weighted average exercise price per share	$ 32.90	$ 32.90	$ 32.90	$ 32.90
Weighted average performance share units	257	91		56
Weighted average grant date fair value per unit	20.71	21.19		21.15

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