Note 8 - Segment Reporting - Schedule of Active Partner Companies by Segment (Details)	Sep. 30, 2021
Aktana, Inc. [Member]
Ownership Interest	15.00%
Clutch Holdings [Member]
Ownership Interest	41.70%
InfoBionic, Inc. [Member]
Ownership Interest	25.20%
Lumesis, Inc. [Member]
Ownership Interest	43.20%
MediaMath, Inc. [Member]
Ownership Interest	13.20%
meQuilibrium [Member]
Ownership Interest	31.90%
Moxe Health Corporation [Member]
Ownership Interest	27.60%
Prognos Health, Inc. [Member]
Ownership Interest	28.50%
Syapse, Inc. [Member]
Ownership Interest	11.10%
Trice Medical, Inc. [Member]
Ownership Interest	12.60%