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Fair value measurements - Summary of Level 3 financial instruments (Details) - Level 3 $ in Thousands | 12 Months Ended
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Dec. 31, 2019 USD ($)
Fair value measurements |
Fair value | $ 25
Residential land |
Fair value measurements |
Fair value | $ 25
Residential loan | Fair Value of Property or Collateral [Member] |
Fair value measurements |
Appraised value, selling cost | 7.00%

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- Definition Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
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