Note 2 - Investments - Telecommunications Stocks Held (Details) - shares	Sep. 30, 2018	May 25, 2018	Jul. 10, 2017	Jul. 09, 2017
ATT [Member]
Investment (in shares)	82,112
Manulife [Member]
Investment (in shares)	2,520
Uniti Shares [Member]
Investment (in shares)	815
NCR [Member]
Investment (in shares)	774
Teradata [Member]
Investment (in shares)	774
Vodafone [Member]
Investment (in shares)	6,471
CenturyLink [Member]
Investment (in shares)	4,398
Frontier Communications [Member]
Investment (in shares)	300		300	4,508
Sprint [Member]
Investment (in shares)	40,000
Verizon [Member]
Investment (in shares)	31,904
Windstream [Member]
Investment (in shares)	135	135