Annual report pursuant to Section 13 and 15(d)

Income Taxes - Reconciliation of Unrecognized Tax Benefits (Details)

v3.20.4
Income Taxes - Reconciliation of Unrecognized Tax Benefits (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]      
Balance at beginning of period $ 28,736 $ 30,289 $ 29,363
Additions based on tax positions related to the current year 3,911 543 1,247
Additions for tax positions of prior years 179 0 336
Reductions for tax positions of prior years (955) (2,096) (657)
Balance at end of period $ 31,871 $ 28,736 $ 30,289