4 5 Other expenses 2019 $000 2018 $000 Operating lease expense 456 458 Information and communications technology 273 258 Other operating costs 657 779 Total other expenses 1,386 1,495 2019 $000 2018 $000 Accrued revenue 3 37 Debtors 1 3 Total receivables under exchange transactions 4 40 Debtors - 30 Total receivables under non-exchange transactions - 30 Total receivables 4 70 Receivables Receivables under exchange transactions Receivables under non-exchange transactions Receivables are deemed immaterial with any expected credit loss rates affecting the amounts disclosed not considered significant. The impact of macroeconomic factors on expected credit loss rates is not considered significant. The carrying value of receivables approximates their fair value. All receivables have been assessed for impairment and there is no impairment. Annual Report 2019 79