XML 12 R34.htm IDEA: XBRL DOCUMENT v3.20.1
Leases - Operating lease costs (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Leases    
Operating lease costs $ 1,882 $ 2,194
Variable lease costs 10 9
Total lease costs $ 1,892 $ 2,203