Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2017

Accounting Policies [Abstract]

Assets' estimated useful life

Depreciation expense for the three years ended December 31, 2017, 2016 and 2015 was $129.4 million, $116.5 million and $106.5 million, respectively. Depreciation and amortization of real estate assets and liabilities in place as of December 31, 2017, is provided for on a straight-line basis over the asset’s estimated useful life:

Land improvements	5.0 to 39.0 years
Buildings and improvements	3.3 to 39.0 years
Lease intangibles (including ground lease intangibles)	2.1 to 99.0 years
Personal property	2.8 to 20.0 years

Schedule of cash and cash equivalents

The following table provides a reconciliation of cash, cash equivalents and restricted cash reported within the Company's Consolidated Balance Sheets with the same amounts shown on the Company's Consolidated Statements of Cash Flows:

	December 31,
(Dollars in thousands)	2017		2016
Cash and cash equivalents	$	6,215	$	5,409
Restricted cash	—		49,098
Total cash, cash equivalents and restricted cash	$	6,215	$	54,507

Schedule of rental income

The components of rental income are as follows:

	Year Ended December 31,
(Dollars in thousands)	2017		2016		2015
Property operating income	$	363,907	$	336,409	$	306,550
Single-tenant net lease	52,873		63,871		67,238
Straight-line rent	6,072		7,201		9,545
Rental income	$	422,852	$	407,481	$	383,333

Other operating income

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

	Year Ended December 31,
(Dollars in thousands)	2017		2016		2015
Property lease guaranty revenue	$	726	$	3,058	$	3,890
Interest income	361		473		579
Management fee income	276		369		370
Other	284		249		208
	$	1,647	$	4,149	$	5,047

Schedule of reclassified expenses

These reclassifications are as follows:

	Year Ended December 31,
	2016				2015
(in thousands)	As Previously Reported		As Reclassified		As Previously Reported		As Reclassified
General and administrative	$	35,805	$	31,309	$	26,925	$	24,716
Acquisition and pursuit costs	—		4,496		—		2,209
Total	$	35,805	$	35,805	$	26,925	$	26,925
Depreciation	$	116,483	$	—	$	106,530	$	—
Amortization	11,207		—		10,084		—
Depreciation and amortization	—		127,690		—		116,614
Total	$	127,690	$	127,690	$	116,614	$	116,614

Schedule of previously reported balances

The following table represents the impact of the adoption of this standard on the Company's Consolidated Statements of Income for the years ended December 31, 2017 and 2016:

	Year Ended December 31,
	2017				2016
(in thousands)	As Reported		As Reclassified		As Previously Reported		As Reclassified
REVENUES
Rental income	$	422,852	$	416,727	$	407,481	$	401,989
Other operating	1,647		8,011		4,149		9,966
	$	424,499	$	424,738	$	411,630	$	411,955
OTHER INCOME (EXPENSE)
Interest and other income, net	$	896	$	658	$	375	$	50
INCOME FROM CONTINUING OPERATIONS	$	23,096	$	23,096	$	85,756	$	85,756

Schedule of reclassification of accrued interest related to the early extinguishment of debt

However, the Company made the following reclassification of accrued interest related to the early extinguishment of debt on its Statements of Cash Flows for the year ended December 31, 2015:

	Year Ended December 31, 2015
(in thousands)	As Previously Reported			As Reclassified
Cash flows used in financing activities	$	(94,010	)	$	(87,618	)
Cash flows provided by operating activities	$	160,375		$	153,983