Debt (Tables)

12 Months Ended

Dec. 31, 2016

Debt [Abstract]

Schedule of debt

Long-term debt and capital and financing lease obligations consist of the following (dollars in thousands):

	December 31,
	2016		2015
Mortgage notes payable due 2017 through 2047; weighted average interest rate of 4.50% in 2016, including net debt premium and deferred financing costs of $(4.5) million in 2016 and including net debt premium and deferred financing costs of $3.3 million in 2015 (weighted average interest rate of 4.51% in 2015)	$	3,184,229	$	3,246,513
Capital and financing lease obligations payable through 2032; weighted average interest rate of 8.08% in 2016 (weighted average interest rate of 8.11% in 2015)		2,485,520		2,489,588
Convertible notes payable in aggregate principal amount of $316.3 million, less debt discount and deferred financing costs of $20.9 million and $34.3 million in 2016 and 2015, respectively, interest at 2.75% per annum, due June 15, 2018		295,397		281,902
Construction financing due 2032; weighted average interest rate of 8.00% in 2016 (weighted average interest rate of 4.84% in 2015)		3,644		24,105
Other notes payable, weighted average interest rate of 5.33% in 2016 (weighted average interest rate of 5.16% in 2015) and maturity dates ranging from 2017 to 2020		76,377		80,305
Total long-term debt and capital and financing lease obligations		6,045,167		6,122,413
Less current portion		215,255		235,604
Total long-term debt and capital and financing lease obligations, less current portion	$	5,829,912	$	5,886,809

As of December 31, 2016 and 2015, the current portion of long-term debt within the Company's consolidated financial statements includes $60.5 million and $60.8 million, respectively, of mortgage notes payable secured by assets held for sale. This debt will either be assumed by the prospective purchasers or be repaid with the proceeds from the sales. Refer to Note 4 for more information about the Company's assets held for sale.

Annual aggregate scheduled maturities of long-term debt obligations outstanding

The annual aggregate scheduled maturities of long-term debt and capital and financing lease obligations outstanding as of December 31, 2016 are as follows (dollars in thousands):

Year Ending December 31,	Long-term Debt			Capital and Financing Lease Obligations			Total Debt
2017	$	154,114		$	416,239		$	570,353
2018		1,231,670			277,829			1,509,499
2019		135,169			256,539			391,708
2020		473,817			200,308			674,125
2021		332,866			186,342			519,208
Thereafter		1,257,549			3,230,311			4,487,860
Total obligations		3,585,185			4,567,568			8,152,753
Less amount representing debt discount and deferred financing costs, net		(25,538	)		—			(25,538	)
Less amount representing interest (weighted average interest rate of 8.08%)		—			(2,082,048	)		(2,082,048	)
Total	$	3,559,647		$	2,485,520		$	6,045,167

Interest expense associated with the convertible notes

The interest expense associated with the Notes (excluding amortization of the associated deferred financing costs) was as follows (dollars in thousands):

	For the Years Ended December 31,
	2016			2015			2014
Coupon interest		$	8,697		$	8,697	$	8,697
Amortization of discount			12,625			11,732		10,902
Interest expense related to convertible notes		$	21,322		$	20,429	$	19,599

Summary of swap and cap instruments

Current notional balance	$	806,994
Weighted average fixed cap rate		4.66	%
Earliest maturity date		2017
Latest maturity date		2022
Estimated asset fair value (included in other assets, net at December 31, 2016)	$	127
Estimated asset fair value (included in other assets, net at December 31, 2015)	$	29