v3.22.1

Income taxes (Details 2)	Dec. 31, 2021 USD ($)
Operating Loss Carryforwards [Line Items]
Opearting Loss Carryforward	$ 35,414,000
Tax Year 2002 [Member]
Operating Loss Carryforwards [Line Items]
Opearting Loss Carryforward	2,504,000
Tax Year 2003 [Member]
Operating Loss Carryforwards [Line Items]
Opearting Loss Carryforward	2,776,000
Tax Year 2004 [Member]
Operating Loss Carryforwards [Line Items]
Opearting Loss Carryforward	1,251,000
Tax Year 2005 [Member]
Operating Loss Carryforwards [Line Items]
Opearting Loss Carryforward	1,304,000
Tax Year 2006 [Member]
Operating Loss Carryforwards [Line Items]
Opearting Loss Carryforward	1,532,000
Tax Year 2007 [Member]
Operating Loss Carryforwards [Line Items]
Opearting Loss Carryforward	1,480,000
Tax Year 2008 [Member]
Operating Loss Carryforwards [Line Items]
Opearting Loss Carryforward	1,600,000
Tax Year 2009 [Member]
Operating Loss Carryforwards [Line Items]
Opearting Loss Carryforward	1,723,000
Tax Year 2010 [Member]
Operating Loss Carryforwards [Line Items]
Opearting Loss Carryforward	823,000
Tax Year 2011 [Member]
Operating Loss Carryforwards [Line Items]
Opearting Loss Carryforward	1,747,000
Tax Year 2012 [Member]
Operating Loss Carryforwards [Line Items]
Opearting Loss Carryforward	1,638,000
Tax Year 2013 [Member]
Operating Loss Carryforwards [Line Items]
Opearting Loss Carryforward	1,403,000
Tax Year 2014 [Member]
Operating Loss Carryforwards [Line Items]
Opearting Loss Carryforward	2,595,000
Tax Year 2015 [Member]
Operating Loss Carryforwards [Line Items]
Opearting Loss Carryforward	1,619,000
Tax Year 2016 [Member]
Operating Loss Carryforwards [Line Items]
Opearting Loss Carryforward	1,171,000
Tax Year 2017 [Member]
Operating Loss Carryforwards [Line Items]
Opearting Loss Carryforward	928,000
Tax Year 2018 [Member]
Operating Loss Carryforwards [Line Items]
Opearting Loss Carryforward	720,000
Tax Year 2019 [Member]
Operating Loss Carryforwards [Line Items]
Opearting Loss Carryforward	3,921,000
Tax Year 2020 [Member]
Operating Loss Carryforwards [Line Items]
Opearting Loss Carryforward	2,236,000
Tax Year 2021 [Member]
Operating Loss Carryforwards [Line Items]
Opearting Loss Carryforward	$ 2,443,000

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