Debt (Tables)

3 Months Ended

Mar. 31, 2020

Debt Disclosure [Abstract]

Credit facility

Daily average amounts outstanding under our credit facility were as follows:

(in thousands)	Quarter Ended March 31, 2020			Year Ended December 31, 2019
Daily average amount outstanding	$	923,423		$	925,715
Weighted-average interest rate	2.83		%	3.54		%

As of March 31, 2020, amounts were available for borrowing under our revolving credit facility as follows:

(in thousands)	Total available
Revolving credit facility commitment	$	1,150,000
Amount drawn on revolving credit facility	(1,140,000		)
Outstanding letters of credit(1)	(5,428		)
Net available for borrowing as of March 31, 2020	$	4,572

⁽¹⁾ We use standby letters of credit to collateralize certain obligations related primarily to our self-insured workers’ compensation claims, as well as claims for environmental matters, as required by certain states. These letters of credit reduce the amount available for borrowing under our revolving credit facility.