Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies - Cash and Restricted Cash (Details)

v3.19.2
Summary of Significant Accounting Policies - Cash and Restricted Cash (Details) - USD ($)
$ in Thousands
Jun. 30, 2019
Dec. 31, 2018
Jun. 30, 2018
Restricted Cash and Cash Equivalents [Abstract]      
Beginning of period, cash $ 226,625 $ 215,706 $ 202,525
Beginning of period, restricted cash, current and long-term 77,774 54,697 39,265
Cash and restricted cash, beginning of period 304,399 270,403 241,790
End of period, cash 299,537 226,625 215,706
End of period, restricted cash, current and long-term 54,330 77,774 54,697
Cash and restricted cash, end of period $ 353,867 $ 304,399 $ 270,403