Incentive Plan (Tables)

6 Months Ended

Jun. 30, 2012

Incentive Plan [Abstract]

Summary of Stock Options

	Number of Options Granted			Weighted Average Exercise Price		Weighted Average Remaining Contractual Term (Years)		Aggregate Instrinsic Value (000’s)
Non-statutory stock options:
Outstanding, beginning of period		787,450		$	14.55
Options granted		—
Options forfeited		—		$	—
Options exercised		(105,700	)	$	6.30
Options expired		—		$	—
Outstanding, end of period		681,750		$	15.83		3.07	$	1,455
Exercisable, end of period		681,750		$	15.83		3.07	$	1,455
Vested or expected to vest, end of period		681,750		$	15.83		3.07	$	1,455

Summary of Non-Vested Share Granted

Nonvested Shares	Number of Shares			Weighted Average Grant Date Fair Value Per Share
Nonvested at beginning of period		1,962,171		$	13.41
Granted during period		827,980			18.10
Vested during period		(682,009	)		13.90
Forfeited during period		(89,574	)		15.01
Nonvested at end of period		2,018,568		$	15.10