Accrued Liabilities

12 Months Ended

Dec. 31, 2021

Accrued Liabilities

Accrued Liabilities

(11)  Accrued Liabilities

Accrued liabilities consisted of the following items:

	December 31,
(in thousands)	2020		2021
Capital expenditures	$	11,307		24,900
Operating expenses		10,038		10,417
Interest expense		46,209		36,794
Ad valorem taxes		3,368		5,400
Other		4,025		3,327
Total accrued liabilities	$	74,947		80,838