Net Income (Loss) Per Common Share (Tables)

9 Months Ended

Sep. 30, 2013

Earnings Per Share [Abstract]

Reconciling the Components of Basic and Diluted Net Income (Loss) per Common Share

	Three Months Ended September 30,						Nine Months Ended September 30,
	2013			2012			2013			2012
General Partner
Net income (loss) attributable to common shareholders	$	(6,067	)	$	(28,230	)	$	83,470		$	(93,102	)
Less: Dividends on participating securities	(650		)	(680		)	(2,024		)	(2,388		)
Basic net income (loss) attributable to common shareholders	(6,717		)	(28,910		)	81,446			(95,490		)
Noncontrolling interest in earnings of common unitholders	—			—			1,142			—
Diluted net income (loss) attributable to common shareholders	$	(6,717	)	$	(28,910	)	$	82,588		$	(95,490	)
Weighted average number of common shares outstanding	324,895			270,289			320,810			265,153
Weighted average Limited Partner Units outstanding	—			—			4,393			—
Other potential dilutive shares	—			—			177			—
Weighted average number of common shares and potential dilutive securities	324,895			270,289			325,380			265,153
Partnership
Net income (loss) attributable to common unitholders	$	(6,159	)	$	(28,689	)	$	84,612		$	(94,838	)
Less: Distributions on participating securities	(650		)	(680		)	(2,024		)	(2,388		)
Basic and diluted net income (loss) attributable to common unitholders	$	(6,809	)	$	(29,369	)	$	82,588		$	(97,226	)
Weighted average number of Common Units outstanding	329,283			274,800			325,203			270,095
Other potential dilutive units	—			—			177			—
Weighted average number of Common Units and potential dilutive securities	329,283			274,800			325,380			270,095

Computation of Anti-Dilutive Common Share

	Three Months Ended September 30,						Nine Months Ended September 30,
	2013			2012			2013		2012
General Partner
Noncontrolling interest in loss of common unitholders	$	(92	)	$	(459	)	$	—	$	(1,736	)
Weighted average Limited Partner Units outstanding	4,388			4,511			—		4,942
General Partner and Partnership
Other potential dilutive shares or units:
Anti-dilutive outstanding potential shares or units under fixed stock option and other stock-based compensation plans	1,373			1,763			1,373		1,763
Outstanding participating securities	3,866			4,045			3,866		4,045