Note 7 - FDIC Indemnification Asset - Changes in Receivable From FDIC (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018		Dec. 31, 2017		Dec. 31, 2016
Beginning balance	$ 7,161	[1]	$ 12,173
Increase in estimated losses on covered OREO			81
Reimbursable expenses (to) from the FDIC	(23)		112
Net FDIC indemnification asset amortization	(2,181)		(3,517)		$ (5,474)
Payments to (reimbursements from) the FDIC	151		(1,688)
Ending balance	5,108		7,161	[1]	$ 12,173
Covered loans	18,815		27,948
Covered OREO	$ 32		$ 105

[1] Derived from audited financial statements