Debt

3 Months Ended

Mar. 31, 2021

Debt consists of the following:


	March 31, 2021		December 31, 2020
	(in thousands)
$450 million senior unsecured notes due 2031 ("2020 Senior Notes") with an effective interest rate of 3.86%, less a discount and deferred issuance costs of $6.0 million and $6.1 million at March 31, 2021 and December 31, 2020, respectively	$	444,012	$	443,860
$400 million senior unsecured notes due 2029 ("2019 Senior Notes") with an effective interest rate of 3.88%, less a discount and deferred issuance costs of $5.2 million and $5.4 million at March 31, 2021 and December 31, 2020, respectively	394,786		394,635
$400 million senior unsecured notes due 2022 ("2012 Senior Notes") with an effective interest rate of 6.00%, less deferred issuance costs of $0.6 million and $0.7 million at March 31, 2021 and December 31, 2020, respectively	215,955		215,827
$600 million senior unsecured revolving credit facility (1)	—		—
Economic development loans with an effective interest rate of 3.00% at March 31, 2021 and December 31, 2020, respectively	4,416		4,416
Long-term debt	$	1,059,169	$	1,058,738

(1) During the third quarter of 2020, the Company utilized excess cash on hand to pay down its senior unsecured revolving credit facility balance in full and the facility remains undrawn upon as of December 31, 2020 and March 31, 2021. As there are no outstanding borrowings at December 31, 2020 or March 31, 2021, deferred issuance costs for the senior unsecured revolving credit facility of $2.4 million and $2.3 million, respectively, are presented in non-current Other Assets in the Consolidated Balance Sheets.

Refer to Note 12 and the Liquidity and Capital Resources header of "Management's Discussion and Analysis of Financial Condition and Results of Operations" for more information.