Note 10 - Other Borrowings - Maturities of Other Borrowings (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Within one year, weighted average rate	1.18%
Within one year, amount	$ 346,997
One to two years, weighted average rate	2.73%
One to two years, amount	$ 17,465
Two to three years, weighted average rate	2.37%
Two to three years, amount	$ 451
Three to four years, weighted average rate	2.11%
Three to four years, amount	$ 631
Four to five years, weighted average rate	2.51%
Four to five years, amount	$ 1,336
Over five years, weighted average rate	2.71%
Over five years, amount	$ 5,436
Total, weighted average rate	1.28%
Total	$ 372,316	$ 152,004