Capitalized Interest (Tables)

12 Months Ended

Dec. 31, 2020

Capitalized Interest Costs, Including Allowance for Funds Used During Construction [Abstract]

Summary of Interest Costs Incurred, Capitalized, Expensed and Charged to Cost of Sales

Our interest costs incurred, capitalized, expensed and charged to cost of sales during the years ended December 31, 2020, 2019 and 2018 was as follows:

	December 31,
	2020		2019		2018
Interest capitalized, beginning of year	$	3,499	$	4,154	$	5,583
Interest incurred	41,327		26,463		26,277
Interest charged to interest expense	(40,872)		(25,380)		(25,081)
Interest charged to cost of sales	(2,929)		(1,738)		(2,625)
Interest capitalized, end of year	$	1,025	$	3,499	$	4,154