Stockholders' Equity (Details 2) (USD $) In Thousands, except Share data	3 Months Ended	6 Months Ended
Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Weighted Average Common shares Outstanding
Weighted average Common Shares outstanding	73,476,473	62,648,117	70,550,070	61,961,051
Unvested restricted stock	(1,441,319.00000)	(1,307,378.00000)	(1,440,527.00000)	(1,306,144.00000)
Weighted average Common Shares Outstanding - Basic	72,035,154	61,340,739	69,109,543	60,654,907
Dilutive effect of restricted stock	1,045,698	975,990		958,973
Dilutive effect of employee stock purchase plan	68,380	65,680		76,442
Weighted average Common Shares Outstanding - Diluted	73,149,232	62,382,409	69,109,543	61,690,322
Net income (loss)
Income (loss) from continuing operations	$ 1,513	$ 4,259	$ (4,628)	$ 4,671
Income (loss) from continuing operations attributable to common shareholders	1,513	4,219	(4,655)	4,566
Noncontrolling interests share in net income		(40)	(27)	(105)
Discontinued operations	498	2,255	877	6,502
NET INCOME (LOSS) ATTRIBUTABLE TO COMMON STOCKHOLDERS	$ 2,011	$ 6,474	$ (3,778)	$ 11,068
Basic Earnings (Loss) Per Common Share
Income (loss) from continuing operations	$ 0.02	$ 0.07	$ (0.07)	$ 0.08
Discontinued operations	$ 0.01	$ 0.04	$ 0.02	$ 0.10
Net income (loss) attributable to common stockholders	$ 0.03	$ 0.11	$ (0.05)	$ 0.18
Diluted Earnings (Loss) Per Common Share
Income from continuing operations	$ 0.02	$ 0.07	$ (0.07)	$ 0.08
Discontinued operations	$ 0.01	$ 0.03	$ 0.02	$ 0.10
Net income (loss) attributable to common stockholders	$ 0.03	$ 0.10	$ (0.05)	$ 0.18

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