Note 6 - Investments in Affordable Housing and Alternative Energy Partnerships - Usage of Affordable Housing and Other Tax Credits Including Energy Tax Credit (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
---|---|---|---|
Dec. 31, 2017 |
Dec. 31, 2016 |
Dec. 31, 2015 |
|
Affordable housing and other tax credits recognized | $ 17,727 | $ 13,422 | $ 10,100 |
Alternative energy tax credit usage | $ 3,301 | $ 24,472 | $ 21,000 |