Supplemental Cash Flow Information (Reconciliation of Cash, Cash Equivalents and Restricted Cash to Statement of Cash Flows) (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022	Jun. 30, 2022	Dec. 31, 2021
Supplemental Cash Flow Information [Abstract]
Cash and cash equivalents	$ 150,528	$ 59,133	$ 113,207
Restricted cash	14,781	29,486	4,019
Total cash, cash equivalents and restricted cash shown in the statement of cash flows	$ 165,309	$ 88,619	$ 117,226	$ 356,677