Long-Term Debt (Tables)

9 Months Ended

Sep. 30, 2019

Debt Instrument [Line Items]

Summary of Long-Term Debt

Our long-term debt consisted of the following (dollars in thousands):

	Interest rate at September 30, 2019	September 30, 2019			December 31, 2018
Senior unsecured notes due 2022	5.6250%	$	400,000		$	400,000
Senior unsecured notes due 2023	5.6250%	350,000			350,000
Senior unsecured notes due 2025	6.3750%	325,000			325,000
Senior unsecured notes due 2026	7.2500%	300,000			300,000
SemGroup $1.0 billion corporate revolving credit facility (1)
Alternate base rate borrowings	—	—			24,500
Eurodollar borrowings	—	—			95,000
HFOTCO term loan B (2)	4.8000%	592,500			597,000
HFOTCO tax exempt notes payable due 2050	2.9513%	225,000			225,000
SemCAMS Midstream term loan A(3)
Banker’s acceptance borrowings	4.4840%	264,309			—
Prime rate borrowings	5.4500%	5			—
SemCAMS Midstream C$525 million revolving credit facility (4)
Banker’s acceptance borrowings	4.4961%	64,190			—
Prime rate borrowings	5.4500%	3,021			—
SemCAMS Midstream KAPS Facility(5)	—	—			—
Unamortized premium (discount) and debt issuance costs, net		(30,787		)	(31,666		)
Total long-term debt, net		2,493,238			2,284,834
Less: current portion of long-term debt		15,912			6,000
Noncurrent portion of long-term debt, net		$	2,477,326		$	2,278,834

(1) SemGroup $1.0 billion corporate revolving credit facility matures on March 15, 2021.

(2) HFOTCO term loan B is due in quarterly installments of $1.5 million with a final payment due on June 26, 2025.

(3) SemCAMS Midstream term loan A is due in quarterly installments of C$4.4 million beginning March 31, 2020 and increasing to C$6.6 million on March 31, 2022 with a final payment on February 25, 2024.

(4) SemCAMS Midstream C$525 million (US$396.5 million at the September 30, 2019 exchange rate) revolving credit facility matures on February 25, 2024.

(5) SemCAMS Midstream KAPS Facility matures on June 13, 2024.

We had the following outstanding letters of credit at September 30, 2019 (dollars in thousands):

SemGroup $1.0 billion revolving credit facility	1.75%	$	27,335
SemGroup secured bi-lateral (1)	1.75%	$	24,394
SemCAMS Midstream revolving credit facility	2.50%	$	22,655
SemCAMS Midstream secured bi-lateral (1)	1.75%	$	3,693

(1) Secured bi-lateral letters of credit are external to the SemGroup $1.0 billion revolving credit facility and the SemCAMS Midstream C$525 million (US$396.5 million at the September 30, 2019 exchange rate) revolving credit facility and do not reduce availability for borrowing on the credit facilities.