Note 5 - Loans - Age Analysis of the Loan Portfolio, Segregated by Class of Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Loans	$ 241,098	$ 239,162
Loans Past Due Greater Than 90 Days and Still Accruing	40
Financial Asset, 30 to 59 Days Past Due [Member]
Loans	599	2,331
Financial Asset, 60 to 89 Days Past Due [Member]
Loans	2,906	380
Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans	40	63
Financial Asset, Past Due [Member]
Loans	3,545	2,774
Financial Asset, Not Past Due [Member]
Loans	237,553	236,388
Gaming [Member]
Loans	10,680	7,900
Loans Past Due Greater Than 90 Days and Still Accruing
Gaming [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Loans
Gaming [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Loans
Gaming [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans
Gaming [Member] | Financial Asset, Past Due [Member]
Loans
Gaming [Member] | Financial Asset, Not Past Due [Member]
Loans	10,680	7,900
Hotel/Motel [Member]
Loans	48,326	50,765
Loans Past Due Greater Than 90 Days and Still Accruing
Hotel/Motel [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Loans
Hotel/Motel [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Loans
Hotel/Motel [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans
Hotel/Motel [Member] | Financial Asset, Past Due [Member]
Loans
Hotel/Motel [Member] | Financial Asset, Not Past Due [Member]
Loans	48,326	50,765
Real Estate, Construction [Member]
Loans	28,951	27,191
Loans Past Due Greater Than 90 Days and Still Accruing
Real Estate, Construction [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Loans	290	105
Real Estate, Construction [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Loans	1,624
Real Estate, Construction [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans
Real Estate, Construction [Member] | Financial Asset, Past Due [Member]
Loans	1,914	105
Real Estate, Construction [Member] | Financial Asset, Not Past Due [Member]
Loans	27,037	27,086
Real Estate, Mortgage [Member]
Loans	127,941	128,352
Loans Past Due Greater Than 90 Days and Still Accruing	40
Real Estate, Mortgage [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Loans	306	1,996
Real Estate, Mortgage [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Loans	1,281	60
Real Estate, Mortgage [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans	40	63
Real Estate, Mortgage [Member] | Financial Asset, Past Due [Member]
Loans	1,627	2,119
Real Estate, Mortgage [Member] | Financial Asset, Not Past Due [Member]
Loans	126,314	126,233
Commercial And Industrial Loan [Member]
Loans	15,965	15,882
Loans Past Due Greater Than 90 Days and Still Accruing
Commercial And Industrial Loan [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Loans		21
Commercial And Industrial Loan [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Loans		320
Commercial And Industrial Loan [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans
Commercial And Industrial Loan [Member] | Financial Asset, Past Due [Member]
Loans		341
Commercial And Industrial Loan [Member] | Financial Asset, Not Past Due [Member]
Loans	15,965	15,541
Other Loan [Member]
Loans	9,235	9,072
Loans Past Due Greater Than 90 Days and Still Accruing
Other Loan [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Loans	3	209
Other Loan [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Loans	1
Other Loan [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans
Other Loan [Member] | Financial Asset, Past Due [Member]
Loans	4	209
Other Loan [Member] | Financial Asset, Not Past Due [Member]
Loans	$ 9,231	$ 8,863