Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2013

Accounting Policies [Abstract]

Assets' estimated useful life

Depreciation and amortization of real estate assets and liabilities in place as of December 31, 2013, 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)	2.0 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)	2013		2012		2011
Property operating income	$	256,129	$	239,707	$	216,058
Single-tenant net lease	52,665		42,481		41,957
Straight-line rent	9,500		6,599		5,725
Rental income	$	318,294	$	288,787	$	263,740

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 millions)	2013		2012		2011
Property lease guaranty revenue	$	5.1	$	4.9	$	6.9
Interest income	0.5		0.5		0.6
Management fee income	0.2		0.2		0.2
Other	0.1		0.5		0.2
	$	5.9	$	6.1	$	7.9