Supplemental Disclosures of Cash Flow Information and Non-Cash Financing and Investing Activities - Schedule of Reconciliation of Cash and Cash Equivalents Inclusive of 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	$ 385,788	$ 542,174	$ 322,477	$ 438,961
Restricted cash	389,390	420,801	302,410	338,635
Total cash and cash equivalents inclusive of restricted cash at the end of the period	$ 775,178	$ 962,975	$ 624,887	$ 777,596