XML 20 R6.htm IDEA: XBRL DOCUMENT v3.20.4
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Parenthetical) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Statement of Comprehensive Income [Abstract]      
Net change in unrealized gain (loss) on available for sale securities, tax effect $ 0 $ 0 $ 34