Incentive Plan (Tables)

3 Months Ended

Mar. 31, 2012

Incentive Plan [Abstract]

Summary Of Stock Options

	Number of Options Granted			Weighted Average Exercise Price		Weighted Average Remaining Contractual Term (Years)		Aggregate Intrinsic Value (000's)
Non-statutory stock options:
Outstanding, beginning of period		787,450		$	14.55
Options granted		—		$	—
Options forfeited		—		$	—
Options exercised		(10,000	)	$	6.98
Options expired		—		$	—
Outstanding, end of period		777,450		$	14.64		3.22	$	4,855
Exercisable, end of period		777,450		$	14.64		3.22	$	4,855
Vested or expected to vest, end of period		777,450		$	14.64		3.22	$	4,855

Summary Of Non-Vested Shares

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		932,058			18.10
Vested during period		(621,444	)		13.92
Forfeited during period		(29,530	)		16.53
Nonvested at end of period		2,243,255		$	15.18