Note 7 - Federal Home Loan Bank of Indianapolis Advances - Maturities of Currently Outstanding FHLB Advances (Details) - Bullet Advances [member] - Federal Home Loan Bank of Indianapolis [Member] $ in Millions	Mar. 31, 2024 USD ($)
2024	$ 60
2025	80
2026	80
2027	100
2028	90
Thereafter	$ 10

Note 7 - Federal Home Loan Bank of Indianapolis Advances - Maturities of Currently Outstanding FHLB Advances (Details) - Bullet Advances [member] - Federal Home Loan Bank of Indianapolis [Member]
$ in Millions

Mar. 31, 2024

USD ($)

$ 60

100

$ 10