Note 6 - Term Debt - Future Contractual Maturities of Term Debt (Details) $ in Thousands	Sep. 30, 2018 USD ($)
2018	$ 250
2019	1,000
2020	3,146
2021
2022
Thereafter	10,000
Total future maturities	14,396
Senior Notes [Member]
2018	250
2019	1,000
2020	3,146
2021
2022
Thereafter
Total future maturities	4,396
Subordinated Debt [Member]
2018
2019
2020
2021
2022
Thereafter	10,000
Total future maturities	$ 10,000