XML 180 R163.htm IDEA: XBRL DOCUMENT v3.21.1
Salaries and other employee expenses (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Salaries and other employee expenses      
Wages and salaries $ 13,717 $ 13,232 $ 18,487
Payroll taxes 1,722 1,721 2,120
Personnel benefits 5,383 8,867 6,732
Share-based payments 640 359 650
Total $ 21,462 $ 24,179 $ 27,989