Earnings per Share and Unit (Tables)

12 Months Ended

Dec. 31, 2015

Parent Company [Member]

Schedule of Earnings Per Share, Basic and Diluted

Parent Company Earnings per Share

The following summarizes the calculation of basic and diluted earnings per share:

	Year ended December 31,
(in thousands, except per share data)	2015		2014	2013
Numerator:
Continuing Operations
Income from operations	$	116,937	133,770	84,297
Gain on sale of real estate	35,606		55,077	1,703
Less: income attributable to noncontrolling interests	2,487		1,457	1,360
Income from continuing operations attributable to the Company	150,056		187,390	84,640
Less: preferred stock dividends and other	21,062		21,515	21,510
Income from continuing operations attributable to common stockholders - basic	$	128,994	165,875	63,130
Income from continuing operations attributable to common stockholders - diluted	$	128,994	165,938	63,175
Discontinued Operations
Income from discontinued operations	—		—	65,285
Less: income from discontinued operations attributable to noncontrolling interests	—		—	121
Income from discontinued operations attributable to the Company	—		—	65,164
Net Income
Net income attributable to common stockholders - basic	128,994		165,875	128,294
Net income attributable to common stockholders - diluted	$	128,994	165,938	128,339
Denominator:
Weighted average common shares outstanding for basic EPS	94,391		92,370	91,383
Weighted average common shares outstanding for diluted EPS	94,856		92,404	91,409
Income per common share – basic
Continuing operations	$	1.37	1.80	0.69
Discontinued operations	—		—	0.71
Net income (loss) attributable to common stockholders	$	1.37	1.80	1.40
Income per common share – diluted
Continuing operations	$	1.36	1.80	0.69
Discontinued operations	—		—	0.71
Net income (loss) attributable to common stockholders	$	1.36	1.80	1.40

Partnership Interest [Member]

Schedule of Earnings Per Share, Basic and Diluted

Operating Partnership Earnings per Unit

The following summarizes the calculation of basic and diluted earnings per unit:

	Year ended December 31,
(in thousands, except per share data)	2015		2014	2013
Numerator:
Continuing Operations
Income from operations	$	116,937	133,770	84,297
Gain on sale of real estate	35,606		55,077	1,703
Less: income attributable to noncontrolling interests	2,247		1,138	1,084
Income from continuing operations attributable to the Partnership	150,296		187,709	84,916
Less: preferred unit distributions and other	21,062		21,515	21,510
Income from continuing operations attributable to common unit holders - basic	129,234		166,194	63,406
Income from continuing operations attributable to common unit holders - diluted	129,234		166,257	63,451
Discontinued Operations
Income from discontinued operations	—		—	65,285
Less: income from discontinued operations attributable to noncontrolling interests	—		—	121
Income from discontinued operations attributable to the Partnership	—		—	65,164
Net Income
Net income attributable to common unit holders - basic	129,234		166,194	128,570
Net income attributable to common unit holders - diluted	$	129,234	166,257	128,615
Denominator:
Weighted average common units outstanding for basic EPU	94,546		92,528	91,555
Weighted average common units outstanding for diluted EPU	95,011		92,562	91,581
Income (loss) per common unit – basic
Continuing operations	$	1.37	1.80	0.69
Discontinued operations	—		—	0.71
Net income (loss) attributable to common unit holders	$	1.37	1.80	1.40
Income (loss) per common unit – diluted
Continuing operations	$	1.36	1.80	0.69
Discontinued operations	—		—	0.71
Net income (loss) attributable to common unit holders	$	1.36	1.80	1.40