Note 11 - Other Borrowings and Unused Lines of Credit (Details) - USD ($) $ in Thousands		12 Months Ended
	Feb. 12, 2019	Dec. 31, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018
Other borrowings					$ 67,250
Interest rate (as a percent)		4.18%			4.94%
Revolving line of credit
Other borrowings					$ 9,000
Line of credit facility, maximum borrowing capacity			$ 20,000	$ 10,000
Interest rate (as a percent)		4.01%
Outstanding amount line of credit		$ 0
London Interbank Offered Rate (LIBOR)
Variable interest rate (as a percent)	282.00%
London Interbank Offered Rate (LIBOR) | Revolving line of credit
Variable interest rate (as a percent)		2.25%
Term notes
Other borrowings					$ 23,250
Interest rate (as a percent)					5.52%