Long-term debt (Tables)

6 Months Ended

Jun. 30, 2020

Our long-term debt is summarized below (in thousands):



	June 30, 2020			Dec. 31, 2019

Unsecured floating rate term loan due quarterly through June 2020	$	—		$	20,000
Unsecured floating rate term loan due quarterly through September 2020¹	75,000			105,000
Unsecured notes bearing fixed rate interest at 5.125% due July 2020	—			310,000
Unsecured notes bearing fixed rate interest at 4.875% due September 2021	350,000			350,000
Unsecured notes bearing fixed rate interest at 6.375% due October 2023	—			650,000
Borrowings under revolving credit agreement expiring August 2024	835,000			903,000
Unsecured notes bearing fixed rate interest at 5.50% due September 2024	325,000			325,000
Unsecured notes bearing fixed rate interest at 7.75% due June 2027	200,000			200,000
Unsecured notes bearing fixed rate interest at 7.25% due September 2027	240,000			240,000
Unsecured notes bearing fixed rate interest at 4.625% due March 2028	1,000,000			—
Unsecured notes bearing fixed rate interest at 5.00% due September 2029	1,100,000			1,100,000
Total principal long-term debt	4,125,000			4,203,000
Debt issuance costs	(33,253		)	(26,873		)
Unamortized premiums and discounts, net	6,329			3,118
Total long-term debt	$	4,098,076		$	4,179,245

¹We have the intent and ability to refinance the principal payments due within the next 12 months on a long-term basis through our revolving credit facility. As such, all debt presented in the table above is classified as long-term on our June 30, 2020 Condensed Consolidated Balance Sheet.

The maximum permitted total leverage ratios under our revolving credit facility are now as follows:



Period	Leverage Ratio
Fiscal quarter ending September 30, 2020 through and including fiscal quarter ending December 31, 2021	5.50 to 1.00
Fiscal quarter ending March 31, 2022	5.25 to 1.00
Fiscal quarter ending June 30, 2022	5.00 to 1.00
Fiscal quarter ending September 30, 2022	4.75 to 1.00
Thereafter	4.50 to 1.00