Incentive Plan (Tables)

3 Months Ended

Mar. 31, 2015

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Summary Of Long-Term Incentive Unit Activity

Below is a summary of our long-term incentive unit activity for the three months ended March 31, 2015.

Unvested Long-term Incentive Units	Units		Weighted-Average Grant Date Fair Value
Unvested, beginning of period	314,415		$	59.34
Granted	1,873		66.75
Vested	(143,775	)	59.83
Cancelled or expired	(11,549	)	57.37
Unvested, end of period	160,964		59.13

Market Performance Based Awards

In the event that the RMS Relative Market Performance during the Market Performance Period is achieved at the “threshold,” “target” or “high” level as set forth below, the awards will become vested as to the market condition with respect to the percentage of Class D units or RSUs, as applicable, set forth below:

Level	RMS Relative Market Performance (2014 Grant)	RMS Relative Market Performance (2015 Grant)	Market Performance Vesting Percentage
Below Threshold Level	< 0 basis points	< -300 basis points	0	%
Threshold Level	0 basis points	-300 basis points	25	%
Target Level	325 basis points	100 basis points	50	%
High Level	> 650 basis points	> 500 basis points	100	%

Summary Of Incentive Award Plan's Stock Option

The following table summarizes the Amended and Restated 2004 Incentive Award Plan’s stock option activity for the period ended March 31, 2015:

	Period Ended March 31, 2015
	Shares		Weighted average exercise price
Options outstanding, beginning of period	80,933		$	37.25
Exercised	(8,001	)	41.73
Options outstanding, end of period	72,932		$	36.76
Exercisable, end of period	72,932		$	36.76

Summary Of Stock Options Outstanding And Exercisable

The following table summarizes information about stock options outstanding and exercisable as of March 31, 2015:

Options outstanding and exercisable
Exercise price	Number outstanding	Weighted-average remaining contractual  life (years)	Weighted-average exercise price		Aggregate intrinsic value
$20.37-20.37	15,000	0.61	20.37		$	683,850
$33.18-41.73	57,932	2.05	41.00		1,445,810
Total / Weighted-average	72,932	1.75	$	36.76	$	2,129,660

Summary Of Restricted Stock Activity

Below is a summary of our restricted stock activity for the three months ended March 31, 2015.

Unvested Restricted Stock	Shares		Weighted-Average Grant Date Fair Value
Unvested, beginning of period	301,615		$	58.40
Granted	99,681		66.75
Vested	(85,286	)	59.29
Cancelled or expired	(19,543	)	58.70
Unvested, end of period	296,467		60.93