XML 19 R28.htm IDEA: XBRL DOCUMENT

Stockholders' Equity - Summary of Anti-Dilutive Options Excluded (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Stockholders' Equity Note [Abstract]
Options to purchase shares of common stock	1,997,363	1,307,857	1,646,892	1,238,356
Weighted average exercise prices of options	$ 54.72	$ 54.00	$ 54.44	$ 54.00

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