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

3 Months Ended

Mar. 31, 2018

Notes Tables

Schedule of Repurchase Agreements [Table Text Block]

	Three Months Ended			Twelve Months Ended
	March 31, 2018			December 31, 2017
Outstanding balance at end of period	$	104,894,000		$	118,748,000
Average interest rate at end of period		0.25	%		0.16	%
Average daily balance during the period	$	108,048,000		$	116,587,000
Average interest rate during the period		0.22	%		0.16	%
Maximum daily balance during the period	$	123,046,000		$	142,459,000