Fair Value of Assets and Liabilities (Tables)

9 Months Ended

Sep. 30, 2021

Fair Value Disclosures [Abstract]

Carrying Value and Estimated Fair Value of Financial Instruments

The following tables present the carrying values of those financial instruments and the estimated corresponding fair values at September 30, 2021 and December 31, 2020 (in thousands):

			Estimated Fair Value Measurements at September 30, 2021
	Carrying Value as of September 30, 2021		Total Fair Value		Level 1		Level 2		Level 3
Assets:
Cash and cash equivalents	$	537,070	$	537,070	$	537,070	$	—	$	—
Restricted cash and investments		48,377		48,377		48,377		—		—
Liabilities:
Borrowings under senior credit facility	$	1,549,783	$	1,444,437	$	—	$	1,444,437	$	—
5.125% Senior Notes due 2023		259,275		245,410		—		245,410		—
5.875% Senior Notes due 2024		225,293		191,519		—		191,519		—
6.00% Senior Notes due 2026		350,000		276,113		—		276,113		—
6.50% Exchangeable Senior Notes due 2026		230,000		238,799		—		238,799		—
Non-recourse debt		317,671		317,671		—		317,671		—

			Estimated Fair Value Measurements at December 31, 2020
	Carrying Value as of December 31, 2020		Total Fair Value		Level 1		Level 2		Level 3
Assets:
Cash and cash equivalents	$	283,524	$	283,524	$	283,524	$	—	$	—
Restricted cash and investments		28,329		28,329		28,329		—		—
Liabilities:
Borrowings under senior credit facility	$	1,474,437	$	1,342,066	$	—	$	1,342,066	$	—
5.875% Senior Notes due 2022		193,958		192,736		—		192,736		—
5.125% Senior Notes due 2023		281,783		256,096		—		256,096		—
5.875% Senior Notes due 2024		242,500		202,458		—		202,458		—
6.00% Senior Notes due 2026		350,000		279,493		—		279,493		—
Non-recourse debt		344,614		344,632		—		344,632		—