Amount, after accumulated amortization, of fair value adjustment, debt discount (premium) and deferred financing cost.

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Long-term debt, maturities, repayment of principle in year eight.

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Long-term debt, maturities, repayment of principle in year nine.

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Long-term debt, maturities, repayment of principle in year seven.

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Long-term debt, maturities, repayment of principle in year six.

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Long-term debt maturities repayments of principal after year nine.

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Maturities of unsecured debt.

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Amount of amortization expense attributable to debt issuance costs.

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Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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SECURED AND UNSECURED DEBT, NET - Unsecured Maturities (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Aggregate maturities of unsecured debt
2021	$ 470,555		$ 470,555
2022	28,458		28,458
2023	351,242		351,242
2024	112,391		112,391
2025	174,793		174,793
2026	352,744		352,744
2027	302,860		302,860
2028	462,310		462,310
2029	491,986		491,986
2030	762,010		762,010
Thereafter	1,937,930		1,937,930
Subtotal	5,447,279		5,447,279
Non-cash	4,828		4,828
Total	5,452,107		5,452,107		$ 4,976,548
Interest expense
Aggregate maturities of unsecured debt
Amortization of financing costs	1,200	$ 1,100	2,400	$ 2,100
Fixed Rate Debt
Aggregate maturities of unsecured debt
Subtotal	183,300		183,300
Secured Debt
Aggregate maturities of unsecured debt
2021	555		555
2022	1,140		1,140
2023	1,242		1,242
2024	96,747		96,747
2025	174,793		174,793
2026	52,744		52,744
2027	2,860		2,860
2028	162,310		162,310
2029	191,986		191,986
2030	162,010		162,010
Thereafter	187,930		187,930
Subtotal	1,034,317		1,034,317
Non-cash	25,596		25,596
Total	1,059,913		1,059,913		862,147
Secured Debt \| Fixed Rate Debt
Aggregate maturities of unsecured debt
2021	555		555
2022	1,140		1,140
2023	1,242		1,242
2024	96,747		96,747
2025	174,793		174,793
2026	52,744		52,744
2027	2,860		2,860
2028	162,310		162,310
2029	191,986		191,986
2030	162,010		162,010
Thereafter	160,930		160,930
Subtotal	1,007,317		1,007,317
Non-cash	25,660		25,660
Total	1,032,977		1,032,977
Secured Debt \| Variable Rate Debt
Aggregate maturities of unsecured debt
Thereafter	27,000		27,000
Subtotal	27,000		27,000
Non-cash	(64)		(64)
Total	26,936		26,936
Unsecured Debt
Aggregate maturities of unsecured debt
2021	470,000		470,000
2022	27,318		27,318
2023	350,000		350,000
2024	15,644		15,644
2025	0		0
2026	300,000		300,000
2027	300,000		300,000
2028	300,000		300,000
2029	300,000		300,000
2030	600,000		600,000
Thereafter	1,750,000		1,750,000
Subtotal	4,412,962		4,412,962
Non-cash	(20,768)		(20,768)
Total	$ 4,392,194		$ 4,392,194		$ 4,114,401