Per Share Data (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended	6 Months Ended
Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Earnings Per Share [Abstract]
Number anti-diluted shares outstanding adjustment (in shares)		177		177
Numerator:
Income (loss) from continuing operations attributable to controlling interest (in dollars)	$ 13,717	$ (19,466)	$ 15,031	$ (19,903)
Discontinued operations (in dollars)	308	144	345	267
Net income (loss) attributable to controlling interest	$ 14,025	$ (19,322)	$ 15,376	$ (19,636)
Denominator:
Weighted average number of shares outstanding — basic (in shares)	225,610	229,436	221,380	229,159
Dilutive shares (in shares)	2,170	0	1,205	0
Weighted average number of shares outstanding — diluted (in shares)	227,780	229,436	222,585	229,159
Earnings (losses) per share attributable to controlling interest - basic:
Continuing operations (usd per share)	$ 0.06	$ (0.08)	$ 0.07	$ (0.09)
Discontinued operations (usd per share)	$ 0.00	$ 0.00	$ 0.00	$ 0.00
Net income (loss) (usd per share)	$ 0.06	$ (0.08)	$ 0.07	$ (0.09)
Earnings (losses) per share attributable to controlling interest - diluted:
Continuing operations (usd per share)	$ 0.06	$ (0.08)	$ 0.07	$ (0.09)
Discontinued operations (usd per share)	$ 0.00	$ 0.00	$ 0.00	$ 0.00
Net income (loss) (usd per share)	$ 0.06	$ (0.08)	$ 0.07	$ (0.09)

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Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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