XML 116 R102.htm IDEA: XBRL DOCUMENT v3.19.1
Employee benefits (Details) - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Jan. 01, 2017
Present value of the defined benefit obligations $ 3,184 $ 4,460 $ 3,954
Fair value of plan assets (3,565) (3,410) (2,992)
Surplus (deficit) in plan (381) 1,050 962
Net defined benefit liabilities 151 1,152 1,064
Prepaid pension cost (532) (102) (102)
Aggregate Reconciliations of defined benefit obligation $ (381) $ 1,050 $ 962