CONSOLIDATED STATEMENTS OF INCOME (Unaudited) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Interest expense	$ 3,424	$ 3,819	$ 7,084	$ 7,483
Gain (loss) on securities	2,006	3,580	3,664	5,155
Income tax expense (benefit)	7,417	13,584	13,326	21,894
Reclassification out of Accumulated Other Comprehensive Income | Accumulated Net Gain (Loss) from Derivatives
Interest expense	(417)	100	(600)	265
Reclassification out of Accumulated Other Comprehensive Income | Accumulated Net Unrealized Investment Gain (Loss)
Gain (loss) on securities	2,006	3,580	3,664	5,155
Reclassification out of Accumulated Other Comprehensive Income | Accumulated Other Comprehensive Income (Loss)
Income tax expense (benefit)	$ 614	$ 880	$ 1,080	$ 1,238