Consolidated Statements of Comprehensive Income (USD $)
Share data in Thousands, except Per Share data, unless otherwise specified
3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
OPERATING REVENUE    
Rental $ 148,585,000 $ 138,949,000
Operating expense reimbursement 58,316,000 58,681,000
Total operating revenue 206,901,000 197,630,000
OPERATING EXPENSE    
Rental property 35,571,000 38,641,000
Real estate taxes 26,164,000 24,501,000
General and administrative 18,802,000 18,356,000
Depreciation and amortization 58,796,000 56,734,000
Impairment - real estate assets 15,739,000 0
Total operating expenses 155,072,000 138,232,000
Operating income 51,829,000 59,398,000
OTHER INCOME (EXPENSE)    
Other income 6,371,000 2,439,000
Interest expense (34,670,000) (39,207,000)
Total other income (expense) (28,299,000) (36,768,000)
Income before gain on property dispositions, income taxes and equity in earnings of unconsolidated joint ventures 23,530,000 22,630,000
Gain on property dispositions 2,271,000 0
Income taxes (845,000) (531,000)
Equity in earnings of unconsolidated joint ventures 6,906,000 4,159,000
Income from continuing operations 31,862,000 26,258,000
Discontinued operations (including net gain on property dispositions of $46,115 for the three months ended March 31, 2014) 0 47,848,000
Net income 31,862,000 74,106,000
Noncontrolling interest – operating partnership (853,000) (1,853,000)
Noncontrolling interest - consolidated joint ventures (58,000) (353,000)
Net income available to common shareholders 30,951,000 71,900,000
Comprehensive income attributable to common shareholders    
Net income 31,862,000 74,106,000
Other comprehensive (loss) income - foreign currency translation (10,410,000) 1,346,000
Other comprehensive loss - derivative instruments (947,000) (511,000)
Other comprehensive (loss) income (11,357,000) 835,000
Total comprehensive income 20,505,000 74,941,000
Less: comprehensive income attributable to noncontrolling interest (648,000) (2,226,000)
Comprehensive income attributable to common shareholders 19,857,000 72,715,000
Weighted average number of common shares outstanding    
Basic 148,315 146,425
Diluted 149,031 147,095
Amounts attributable to common shareholders    
Income from continuing operations 30,951,000 25,179,000
Discontinued operations 0 46,721,000
Net income available to common shareholders 30,951,000 71,900,000
Liberty Property Limited Partnership [Member]    
OPERATING REVENUE    
Rental 148,585,000 138,949,000
Operating expense reimbursement 58,316,000 58,681,000
Total operating revenue 206,901,000 197,630,000
OPERATING EXPENSE    
Rental property 35,571,000 38,641,000
Real estate taxes 26,164,000 24,501,000
General and administrative 18,802,000 18,356,000
Depreciation and amortization 58,796,000 56,734,000
Impairment - real estate assets 15,739,000 0
Total operating expenses 155,072,000 138,232,000
Operating income 51,829,000 59,398,000
OTHER INCOME (EXPENSE)    
Other income 6,371,000 2,439,000
Interest expense (34,670,000) (39,207,000)
Total other income (expense) (28,299,000) (36,768,000)
Income before gain on property dispositions, income taxes and equity in earnings of unconsolidated joint ventures 23,530,000 22,630,000
Gain on property dispositions 2,271,000 0
Income taxes (845,000) (531,000)
Equity in earnings of unconsolidated joint ventures 6,906,000 4,159,000
Income from continuing operations 31,862,000 26,258,000
Discontinued operations (including net gain on property dispositions of $46,115 for the three months ended March 31, 2014) 0 47,848,000
Net income 31,862,000 74,106,000
Noncontrolling interest - consolidated joint ventures (58,000) (353,000)
Preferred unit distributions (118,000) (118,000)
Net income available to common shareholders 31,686,000 73,635,000
Comprehensive income attributable to common shareholders    
Net income 31,862,000 74,106,000
Other comprehensive (loss) income - foreign currency translation (10,410,000) 1,346,000
Other comprehensive loss - derivative instruments (947,000) (511,000)
Other comprehensive (loss) income (11,357,000) 835,000
Total comprehensive income 20,505,000 74,941,000
Weighted average number of common shares outstanding    
Basic 151,856 149,981
Diluted 152,572 150,651
Net income allocated to general partners 30,951,000 71,900,000
Net income allocated to limited partners 853,000 1,853,000
Amounts attributable to common shareholders    
Income from continuing operations 31,804,000 25,905,000
Net income available to common shareholders $ 31,686,000 $ 73,635,000
Common shares [Member]    
Basic:    
Income from continuing operations $ 0.21 $ 0.17
Income from discontinued operations $ 0.00 $ 0.32
Income per common share - basic $ 0.21 $ 0.49
Diluted:    
Income from continuing operations $ 0.21 $ 0.17
Income from discontinued operations $ 0.00 $ 0.32
Income per common share - diluted $ 0.21 $ 0.49
Distributions per common share or unit $ 0.475 $ 0.475
Common Units [Member] | Liberty Property Limited Partnership [Member]    
Basic:    
Income from continuing operations $ 0.21 $ 0.17
Income from discontinued operations $ 0.00 $ 0.32
Income per common share - basic $ 0.21 $ 0.49
Diluted:    
Income from continuing operations $ 0.21 $ 0.17
Income from discontinued operations $ 0.00 $ 0.32
Income per common share - diluted $ 0.21 $ 0.49
Distributions per common share or unit $ 0.475 $ 0.475