Supplemental Disclosure of Cash Flow Information - Cash and Restricted Cash (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019	Dec. 31, 2018
Supplemental Cash Flow Elements [Abstract]
Cash and cash equivalents	$ 392,674	$ 240,227
Restricted cash	23,908	26,856
Long-term restricted cash	41,917	34,614
Total cash, cash equivalents, and restricted cash shown in the consolidated statements of cash flows	$ 458,499	$ 301,697	$ 328,500	$ 450,218