Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2014

Accounting Policies [Abstract]

Assets' estimated useful life

Depreciation and amortization of real estate assets and liabilities in place as of December 31, 2014, is provided for on a straight-line basis over the asset’s estimated useful life:

Land improvements	15.0 to 38.1 years
Buildings and improvements	3.3 to 39.0 years
Lease intangibles (including ground lease intangibles)	1.0 to 93.1 years
Personal property	1.9 to 15.8 years

Schedule of rental income

The components of rental income are as follows:

	Year Ended December 31,
(Dollars in thousands)	2014		2013		2012
Property operating income	$	285,304	$	251,403	$	233,662
Single-tenant net lease	65,252		51,467		42,183
Straight-line rent	10,969		9,452		6,599
Rental income	$	361,525	$	312,322	$	282,444

Other operating income

Other operating income on the Company’s Consolidated Statements of Operations was comprised of the following:

	Year Ended December 31,
(Dollars in thousands)	2014		2013		2012
Property lease guaranty revenue	$	4,430	$	5,114	$	4,898
Interest income	731		457		448
Management fee income	289		164		158
Other	215		191		548
	$	5,665	$	5,926	$	6,052