Income per Common Unit of the Operating Partnership

3 Months Ended

Mar. 31, 2015

Earnings Per Share, Basic and Diluted [Line Items]

Earnings Per Share [Text Block]

Income per Common Share of the Trust

The following table sets forth the computation of basic and diluted income per common share of the Trust (in thousands except per share amounts):

	For the Three Months Ended					For the Three Months Ended
	March 31, 2015					March 31, 2014
	Income (Numerator)		Weighted Average Shares (Denominator)	Per Share		Income (Numerator)		Weighted Average Shares (Denominator)	Per Share
Basic income from continuing operations
Income from continuing operations net of noncontrolling interest	$	30,951	148,315	$	0.21	$	25,179	146,425	$	0.17
Dilutive shares for long-term compensation plans	—		716			—		670
Diluted income from continuing operations
Income from continuing operations net of noncontrolling interest	$	30,951	149,031	$	0.21	$	25,179	147,095	$	0.17
Basic income from discontinued operations
Discontinued operations net of noncontrolling interest	$	—	148,315	$	—	$	46,721	146,425	$	0.32
Dilutive shares for long-term compensation plans	—		716			—		670
Diluted income from discontinued operations
Discontinued operations net of noncontrolling interest	$	—	149,031	$	—	$	46,721	147,095	$	0.32
Basic income per common share
Net income available to common shareholders	$	30,951	148,315	$	0.21	$	71,900	146,425	$	0.49
Dilutive shares for long-term compensation plans	—		716			—		670
Diluted income per common share
Net income available to common shareholders	$	30,951	149,031	$	0.21	$	71,900	147,095	$	0.49

Dilutive shares for long-term compensation plans represent the unvested common shares outstanding during the periods as well as the dilutive effect of outstanding options. The amount of anti-dilutive options excluded from the computation of diluted income per common share for the three months ended March 31, 2015 was 596,000 as compared to 1,247,000 for the same period in 2014.

Stock Option Exercises [Text Block]

During the three months ended March 31, 2015, 44,000 common shares were issued upon the exercise of options. During the year ended December 31, 2014, 44,000 common shares were issued upon the exercise of options.

Liberty Property Limited Partnership [Member]

Earnings Per Share, Basic and Diluted [Line Items]

Earnings Per Share [Text Block]

Income per Common Unit of the Operating Partnership

The following table sets forth the computation of basic and diluted income per common unit of the Operating Partnership (in thousands, except per unit amounts):

	For the Three Months Ended						For the Three Months Ended
	March 31, 2015						March 31, 2014
	Income (Numerator)			Weighted Average Units (Denominator)	Per Unit		Income (Numerator)			Weighted Average Units (Denominator)	Per Unit
Income from continuing operations - net of noncontrolling interest - consolidated joint ventures	$	31,804					$	25,905
Less: Preferred unit distributions	(118		)				(118		)
Basic income from continuing operations
Income from continuing operations available to common unitholders	$	31,686		151,856	$	0.21	$	25,787		149,981	$	0.17
Dilutive units for long-term compensation plans	—			716			—			670
Diluted income from continuing operations
Income from continuing operations available to common unitholders	$	31,686		152,572	$	0.21	$	25,787		150,651	$	0.17
Basic income from discontinued operations
Discontinued operations	$	—		151,856	$	—	$	47,848		149,981	$	0.32
Dilutive units for long-term compensation plans	—			716			—			670
Diluted income from discontinued operations
Discontinued operations	$	—		152,572	$	—	$	47,848		150,651	$	0.32
Basic income per common unit
Income available to common unitholders	$	31,686		151,856	$	0.21	$	73,635		149,981	$	0.49
Dilutive units for long-term compensation plans	—			716			—			670
Diluted income per common unit
Income available to common unitholders	$	31,686		152,572	$	0.21	$	73,635		150,651	$	0.49

Dilutive units for long-term compensation plans represent the unvested common units outstanding during the periods as well as the dilutive effect of outstanding options. The amount of anti-dilutive options excluded from the computation of diluted income per common unit for the three months ended March 31, 2015 was 596,000 as compared to 1,247,000 for the same period in 2014.

Stock Option Exercises [Text Block]

During the three months ended March 31, 2015, 44,000 common units were issued upon exercise of options. During the year ended December 31, 2014, 44,000 common units were issued upon the exercise of options.