Short term investments (Details Narrative)	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020
Maximum [Member]
Interest Rates	0.87%	1.75%
Minimum [Member]
Interest Rates	0.85%	0.50%

Average rate paid on interest-bearing liabilities.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher SEC
-Name Regulation S-K (SK)
-Number 229
-Section 1402
-Paragraph (b)
-Subparagraph (4)

Name:	srt_InterestBearingLiabilitiesAverageRatePaid
Namespace Prefix:	srt_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration