For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

Note 7 - Segment Reporting (Details Textual)	3 Months Ended		6 Months Ended		12 Months Ended
Note 7 - Segment Reporting (Details Textual)	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Number of Reportable Segments			2
Geographic Concentration Risk [Member] \| Revenue Benchmark [Member] \| UNITED STATES
Concentration Risk, Percentage	82.00%	82.00%	82.00%	83.00%
Geographic Concentration Risk [Member] \| Net Assets, Geographic Area [Member] \| UNITED STATES
Concentration Risk, Percentage			77.00%		75.00%