Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2022

Fair Value Disclosures [Abstract]

Fair Value, by Balance Sheet Grouping

The following tables summarize assets and liabilities measured at fair value on a recurring basis as of December 31, 2022 and 2021:

			Fair Value
	Carrying Value (1)		Level 1		Level 2
December 31, 2022
Assets
Cash, cash equivalents and restricted cash	$	189,754	$	189,754	$	—
Collateral on derivatives	909		909		—
Fair value of derivative assets - current	8,479		—		8,479
Fair value of derivative assets - noncurrent	8,184		—		8,184
Liabilities
Global Ultraco Debt Facility (1)(2)	237,750		—		237,750
Convertible Bond Debt (1)(3)	104,119		—		172,661
Fair value of derivative liabilities - current	163		—		163

			Fair Value
	Carrying Value (1)		Level 1		Level 2
December 31, 2021
Assets
Cash, cash equivalents and restricted cash	$	86,222	$	86,222	$	—
Collateral on derivatives	15,081		15,081		—
Fair value of derivative assets - current	4,669		—		4,669
Fair value of derivative assets - noncurrent	3,112		—		3,112
Liabilities
Global Ultraco Debt Facility (1)(2)	287,550		—		287,550
Convertible Bond Debt (1)(3)	114,119		—		147,499
Fair value of derivative liabilities - current	4,253		—		4,253

(1)Carrying value represents outstanding principal amount and excludes debt discounts and debt issuance costs.

(2)The fair value of the liabilities is based on the required repayment to the lenders if the debt was discharged in full on December 31, 2022 and 2021.

(3)The fair value of the Convertible Bond Debt is based on pricing data (including observable trade information) sourced from Bloomberg.com.