Compensation (Tables)

12 Months Ended

Dec. 31, 2015

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

Activity Associated with Limited Partnership Units

A summary of the activity associated with limited partnership units is as follows:

	Number of Units
Balance at December 31, 2012		68,480,097
Granted		50,908,986
Redeemed/exchanged units		(88,181,354	)
Forfeited units		—
Balance at December 31, 2013		31,207,729
Granted		42,416,871
Redeemed/exchanged units		(19,193,901	)
Forfeited units		(868,709	)
Balance at December 31, 2014		53,561,990
Granted		38,169,581
Redeemed/exchanged units		(14,166,438	)
Forfeited units		(1,163,358	)
Balance at December 31, 2015		76,401,775

Activity Associated with Restricted Stock Units

A summary of the activity associated with RSUs is as follows:

	Restricted Stock Units			Weighted- Average Grant Date Fair Value		Weighted- Average Remaining Contractual Term (Years)
Balance at December 31, 2012		2,608,731		$	5.94		1.83
Granted		1,543,183			3.18
Delivered units		(1,038,937	)		6.09
Forfeited units		(288,375	)		4.56
Balance at December 31, 2013		2,824,602		$	4.51		1.79
Granted		995,771			5.86
Delivered units		(1,288,758	)		5.11
Forfeited units		(390,683	)		4.94
Balance at December 31, 2014		2,140,932		$	4.70		1.74
Granted		691,831			8.06
Delivered units		(1,045,056	)		5.00
Forfeited units		(165,276	)		5.75
Balance at December 31, 2015		1,622,431		$	5.83		1.53

Activity Associated with Stock Options

A summary of the activity associated with stock options is as follows:

	Options			Weighted- Average Exercise Price		Weighted- Average Remaining Contractual Term (Years)		Aggregate Intrinsic Value
Balance at December 31, 2012		6,450,931		$	14.11		2.4	$	—
Granted		—			—
Exercised options		—
Forfeited options		(1,959,693	)		20.23
Balance at December 31, 2013		4,491,238		$	11.60		2.0	$	—
Granted		—			—
Exercised options		—			—
Forfeited options		(2,307,000	)		13.50
Balance at December 31, 2014		2,184,238		$	9.66		2.3	$	569,979
Granted		—			—
Exercised options		(94,000	)		8.09
Forfeited options		(11,000	)		9.03
Balance at December 31, 2015		2,079,238		$	9.73		1.4	$	1,169,664
Options exercisable at December 31, 2015		2,079,238		$	9.73		1.4	$	1,169,664

Stock Options Outstanding

The following table provides further details relating to the Company’s stock options outstanding at December 31, 2015:

	Options Outstanding						Options Exercisable
Range of Exercise Prices	Number Outstanding		Weighted-Average Exercise Price		Weighted-Average Remaining Contractual Life (Years)		Number Exercisable		Weighted-Average Exercise Price
$8.42—$9.49		1,065,068	$	8.71		1.0		1,065,068	$	8.71
$9.50—$10.82		1,014,170		10.81		2.0		1,014,170		10.81
Total		2,079,238	$	9.73		1.4		2,079,238	$	9.73