XML 71 R57.htm IDEA: XBRL DOCUMENT v3.22.1
Fair Value of Financial Instruments (Details) - Recurring - USD ($)
$ in Thousands
Mar. 31, 2022
Dec. 31, 2021
Quoted Prices in Active Markets (Level 1)    
Assets    
Marketable securities $ 7,124 $ 7,645
Significant Other Observable Inputs (Level 2)    
Assets    
Marketable securities 0 0
Significant Unobservable Inputs (Level 3)    
Assets    
Marketable securities 0 0
Carrying Amount    
Assets    
Marketable securities $ 7,124 $ 7,645