Exit and Termination Costs (Tables)

12 Months Ended

Dec. 31, 2021

Restructuring and Related Activities [Abstract]

Summary of Exit and Termination Costs

The following summarizes our exit and termination costs for the three years ended December 31, 2021, 2020 and 2019 (in thousands):

	Year Ended December 31,
	2021		2020		2019
Severance costs	$	567	$	5,909	$	7,535
Transportation contract capacity releases (including    accretion of discount)		754		10,900		—
Divestiture contract obligation (including accretion    of discount)		20,340		499,935		—
One-time minimum volume commitment contract    payment		—		28,500		—
Stock-based compensation and other		—		2,165		1,971
	$	21,661	$	547,409	$	9,506

Exit and Termination Costs Included in Accrued Liabilities in Consolidated Balance Sheet

The following details the accrued exit and termination cost liability activity for the years ended December 31, 2021 and 2020 (in thousands):

	Exit Costs			Termination Costs
Balance at December 31, 2019	$	—		$	4,692
Accrued severance costs		—			5,909
Accrued contract obligations		490,114			—
Accretion of discount		20,720			—
Payments		(17,291	)		(9,147	)
Balance at December 31, 2020		493,543			1,454
Accrued severance costs		—			567
Accrued contract obligations-changes in estimate		(27,575	)		—
Accretion of discount		48,669			—
Payments		(90,895	)		(2,011	)
Balance at December 31, 2021	$	423,742		$	10