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Summary of Significant Accounting Policies - Exchange rates (Details)	6 Months Ended		12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Jun. 30, 2021	Jun. 30, 2020
Euro to US Dollar
Period end exchange rate	1.13	1.23	1.19	1.12
Average period exchange rate	1.17	1.17	1.19	1.11
Mexican Peso to US Dollar
Period end exchange rate	0.05	0.05	0.05	0.04
Average period exchange rate	0.05	0.05	0.05	0.05

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Average period foreign exchange rate used to translate amounts denominated in functional currency to reporting currency.

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Foreign exchange rate used to translate amounts denominated in functional currency to reporting currency.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 830
-SubTopic 30
-Section S99
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6897108&loc=SL6897125-166521

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 830
-SubTopic 30
-Section 50
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