CONSOLIDATED STATEMENTS OF INCOME (Parentheticals) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Interest on other borrowings	$ 13,986	$ 15,118	$ 14,503
Securities gains, net	7,793	7,659	1,085
Income taxes	36,053	34,990	28,215
Reclassification out of Accumulated Other Comprehensive Income | Accumulated Net Gain (Loss) from Derivatives
Interest on other borrowings	(1,820)	170	179
Reclassification out of Accumulated Other Comprehensive Income | Accumulated Net Unrealized Investment Gain (Loss)
Securities gains, net	7,592	7,659	1,085
Reclassification out of Accumulated Other Comprehensive Income | Accumulated Other Comprehensive Income (Loss)
Income taxes	$ 2,376	$ 1,890	$ 165