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Other assets (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Other assets    
Accounts receivable $ 938 $ 3,549
Prepaid expenses 2,541 1,070
Prepaid fees and commissions 486 1,110
Interest receivable - deposits 8 26
IT projects under development 218 521
Severance fund 1,927 1,863
Other 698 718
Other assets $ 6,816 $ 8,857