Summary of significant accounting policies (Details 4) - shares	Dec. 31, 2021	Dec. 31, 2020
Previously reported
Shares issued	5,322,459	3,260,559
Restatement
Shares issued	7,899,832	7,899,832

Number of common units issued of limited liability company (LLC).

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480008/505-10-S99-1

Name:	us-gaap_CommonUnitIssued
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant