Employee Benefit Plans (Tables)

3 Months Ended

Mar. 31, 2014

The following table shows the total stock-related compensation expense relating to the stock options, RSUs and cash equivalent awards.



	Three Months Ended March 31,
	2014		2013
Stock options	$	727	$	1,335
RSUs and performance-based equity awards	3,513		2,660
Cash-equivalent stock awards	4,629		12,756
Total	$	8,869	$	16,751

Rsus Other Than Performance Based Rsus [Member]

The activity related to the Company’s RSUs awards is as follows:



	Three Months Ended March 31, 2014
	Number of Awards		Weighted Average Grant Date Fair Value
Outstanding at beginning of period	47,899		$	65.07
RSUs granted	151,392		100.68
RSUs forfeited	—		—
RSUs fully vested	(24,876	)	(65.06		)
Outstanding at end of period	174,415		$	95.98

Performance Based Rsus [Member]

The activity related to the Company’s performance-based equity awards is as follows:



	Three Months Ended March 31, 2014
	Number of Awards		Weighted Average Grant Date Fair Value
Outstanding at beginning of period	268,173		$	69.64
Performance-based equity awards granted	55,434		100.67
Additional awards granted due to achievement of performance criteria	34,965		61.51
Performance-based equity awards forfeited	—		—
Performance-based equity awards fully vested	(151,480	)	(61.51		)
Outstanding at end of period	207,092		$	82.52

Cash Equivalent Stock Awards [Member]

The activity related to the Company's cash-equivalent RSUs and performance-based awards is as follows:



	RSU's					Performance-based Awards
Three Months Ended March 31, 2014	Number of Awards		Weighted Average Grant Date Fair Value			Number of Awards		Weighted Average Grant Date Fair Value
Outstanding at beginning of period	683,028		$	74.10		343,987		71.02
Granted	146,054		100.67			83,146		100.67
Additional awards granted due to achievement of performance criteria	—		—			34,965		61.51
Forfeited	(960	)	(77.72		)	—		—
Fully vested	(250,640	)	(64.41		)	(151,480	)	(61.51		)
Outstanding at end of period	577,482		$	83.81		310,618		$	82.52