Stock-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2013

The Company’s associated compensation expense, which is included in the caption “General and administrative expenses” in the consolidated statements of income, is reflected in the table below for the periods presented.



	Year ended December 31,
In thousands	2013		2012		2011
Non-cash equity compensation	$	39,890	$	29,057	$	16,572

Schedule of Stock Option Activity

stock option activity under the 2000 Plan for the periods presented:



	Outstanding				Exercisable
	Number of options		Weighted average exercise price		Number of options	Weighted average exercise price
Outstanding at December 31, 2010	104,970		$	0.71	104,970	$	0.71
Exercised	(18,470	)	$	0.71
Outstanding at December 31, 2011	86,500		$	0.71	86,500	$	0.71
Exercised	(86,500	)	$	0.71
Outstanding at December 31, 2012	—		—		—	—

Restricted stock [Member]

Summary of Changes in Non-vested Shares of Restricted Stock

A summary of changes in non-vested restricted shares from December 31, 2010 to December 31, 2013 is presented below:



	Number of non-vested shares		Weighted average grant-date fair value
Non-vested restricted shares at December 31, 2010	1,108,077		$	35.72
Granted	491,315		63.59
Vested	(359,601	)	29.95
Forfeited	(41,447	)	41.93
Non-vested restricted shares at December 31, 2011	1,198,344		$	48.66
Granted	916,028		73.46
Vested	(444,723	)	45.25
Forfeited	(40,187	)	59.05
Non-vested restricted shares at December 31, 2012	1,629,462		$	63.28
Granted	261,259		97.95
Vested	(464,809	)	47.30
Forfeited	(68,756	)	71.91
Non-vested restricted shares at December 31, 2013	1,357,156		$	74.99