Earnings Per Share Basic Earnings Per Share (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2014		Jun. 30, 2013		Jun. 30, 2014		Jun. 30, 2013
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Net income from continuing operations	$ 20,907		$ 19,516		$ 37,256		$ 31,927
Net Income (Loss) Attributable to Noncontrolling Interest	1,025		969		2,261		1,899
Income (Loss) from Continuing Operations Attributable to Parent	19,882		18,547		34,995		30,028
Noncontrolling Interest, Change in Redemption Value	(253)	[1]	(97)	[1]	(369)	[1]	(112)	[1]
Preferred Stock Dividends and Other Adjustments	(942)		(12,371)	[2]	(1,887)		(12,813)	[2]
Other Preferred Stock Dividends and Adjustments	(1,195)		(12,468)		(2,256)		(12,925)
Net Income Loss Continuing Available to Common Shareholders Basic Before Participating	18,687		6,079		32,739		17,103
Undistributed Earnings Continuing Ops Allocated to Participating Securities	(118)		(88)		(218)		(673)
Net Income (Loss) from Continuing Ops Available to Common Stockholders, Basic	18,569		5,991		32,521		16,430
Net income from discontinued operations	1,450		2,781		3,378		4,503
Undistributed Earnings Discontinued Operations Allocated to Participating Securities	(14)		(111)		(37)		(325)
Net Income from Discontinued Ops Available to Common Stockholders, Basic	1,436		2,670		3,341		4,178
Net Income (Loss) Available to Common Stockholders Basic before Allocation to Participating Securities	20,137		8,860		36,117		21,606
Undistributed Earnings Allocated to Participating Securities	(132)		(199)		(255)		(998)
Net income attributable to common shareholders for earnings per share calculation	20,005		8,661		35,862		20,608
Income (Loss) from Continuing Operations, Per Basic Share	$ 0.24		$ 0.08		$ 0.42		$ 0.21
Income (Loss) from Discontinued Operations, Net of Tax, Per Basic Share	$ 0.02		$ 0.03		$ 0.04		$ 0.05
Earnings Per Share, Basic	$ 0.26		$ 0.11		$ 0.46		$ 0.27
Series B Preferred Stock [Member]
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Preferred Stock Dividends and Other Adjustments			$ (11,700)				$ (11,700)
Common Stock [Member]
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Weighted Average Basic Common Shares Outstanding	78,438,636		77,250,998		78,292,721		77,035,998

[1] See Part II. Item 8. “Financial Statements and Supplementary Data—Note 14: Noncontrolling Interests” in the Company’s Annual Report on Form 10-K for the year ended December 31, 2013 for a description of the redemption values related to the redeemable noncontrolling interests. In accordance with the Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) 480, Distinguishing Liabilities from Equity (“ASC 480”), an increase in redemption value from period to period reduces income attributable to common shareholders. Decreases in redemption value from period to period increase income attributable to common shareholders, but only to the extent that the cumulative change in redemption value remains a cumulative increase since adoption of this standard in the first quarter of 2009.

[2] Consideration paid in excess of carrying value for the repurchase of the Series B preferred stock of $11.7 million is considered a deemed dividend and, for purposes of calculating EPS, reduces net income attributable to common shareholders for the three and six months ended June 30, 2013.