Note 6 - Securities Sold Under Agreements to Repurchase (Tables)

3 Months Ended

Mar. 31, 2021

Notes Tables

Schedule of Repurchase Agreements [Table Text Block]

	Three Months Ended			Twelve Months Ended
	March 31, 2021			December 31, 2020
Outstanding balance at end of period	$	141,310,000		$	118,365,000
Average interest rate at end of period		0.11	%		0.12	%
Average daily balance during the period	$	132,845,000		$	132,880,000
Average interest rate during the period		0.11	%		0.12	%
Maximum daily balance during the period	$	169,102,000		$	173,186,000