Cash, Cash Equivalents, and Restricted Cash (Schedule of Cash, Cash Equivalents and Restricted Cash) (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022	Jun. 30, 2022	Dec. 31, 2021
Restricted Cash And Cash Equivalents Items [Line Items]
Cash and cash equivalents	$ 179,169	$ 143,708
Restricted cash - current asset	72,077	41,959
Total cash, cash equivalents, and restricted cash	255,509	189,283	$ 250,978	$ 435,626
Securitization Escrow Accounts [Member]
Restricted Cash And Cash Equivalents Items [Line Items]
Restricted cash - current asset	66,252	35,820
Payment, Performance Bonds, and Other [Member]
Restricted Cash And Cash Equivalents Items [Line Items]
Restricted cash - current asset	5,825	6,139
Surety Bonds and Workers Compensation [Member]
Restricted Cash And Cash Equivalents Items [Line Items]
Restricted cash - noncurrent asset	$ 4,263	$ 3,616
Restricted Cash and Cash Equivalents, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Other Assets Noncurrent