XML 41 R28.htm IDEA: XBRL DOCUMENT v3.21.2
Note 1 - Summary of Significant Accounting Policies - Reconciliation of Cash, Cash Equivalents and Restricted Cash (Details) - USD ($)
$ in Thousands
Jun. 30, 2021
Dec. 31, 2020
Jun. 30, 2020
Dec. 31, 2019
Cash and cash equivalents $ 334,537 $ 519,182 $ 1,308,347 $ 249,977
Restricted cash 21,312 15,817 17,086 20,471
Total cash, cash equivalents and restricted cash $ 355,849 $ 534,999 $ 1,325,433 $ 270,448