Consolidated Statements of Comprehensive Income (Parentheticals) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Unrealized gain (loss) on securities, pre-tax	$ 5,120,000	$ 5,364,000	$ (646,000)
Reclassification adjustment for impairment charge, pre-tax	(1,103,000)	67,000	146,000
Net unrealized holding losses on securities transferred from available-for-sale to held-to-maturity, pre-tax	0	(9,362,000)	0
Amortization of net unrealized holding losses to income during the period, pre-tax	$ 1,658,000	$ 137,000	$ 163,000