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Cash, Cash Equivalents, and Restricted Cash (Schedule of Cash, Cash Equivalents and Restricted Cash) (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022	Sep. 30, 2022	Dec. 31, 2021
Restricted Cash And Cash Equivalents Items [Line Items]
Cash and cash equivalents	$ 190,545	$ 143,708
Restricted cash - current asset	37,221	41,959
Total cash, cash equivalents, and restricted cash	232,084	189,283	$ 279,874	$ 435,626
Securitization Escrow Accounts [Member]
Restricted Cash And Cash Equivalents Items [Line Items]
Restricted cash - current asset	31,277	35,820
Payment, Performance Bonds, and Other [Member]
Restricted Cash And Cash Equivalents Items [Line Items]
Restricted cash - current asset	5,944	6,139
Surety Bonds and Workers Compensation [Member]
Restricted Cash And Cash Equivalents Items [Line Items]
Restricted cash - noncurrent asset	$ 4,318	$ 3,616
Restricted Cash and Cash Equivalents, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Other Assets Noncurrent