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v3.23.1

Lease obligations (Details 1) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Operating cash flows from operating leases | $ 195,000 | $ 196,000 |
Right-of-use asset obtained in exchange for new operating lease obligations | 62,000 | 57,000 | $ 4,000
ZHEJIANG TIANLAN |  |  |
Right-of-use asset obtained in exchange for new operating lease obligations | 0 | 0 |
Finance cash flows from finance leases | $ 0 | $ 0 |

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- Definition Amount of increase in right-of-use asset obtained in exchange for operating lease liability. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 55 -Paragraph 53 -URI https://asc.fasb.org/extlink&oid=123414884&loc=SL77918982-209971 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (g)(2) -URI https://asc.fasb.org/extlink&oid=128292326&loc=SL77918686-209980 + Details
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