Consolidated Statement of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Statement of Comprehensive Income [Abstract]
Net income	$ 11,712	$ 10,674	$ 9,737	$ 17,959
Unrealized gain from debt securities available for sale:
Unrealized net holding gains on debt securities available for sale arising during the period	15,866	5,777	20,191	9,905
Reclassification adjustment for gains included in net income	(6)	(32)	(48)	(49)
Income tax expense	(4,139)	(1,499)	(5,257)	(2,572)
Unrealized net gains on debt securities available for sale, net of reclassification adjustment	11,721	4,246	14,886	7,284
Unrealized loss from cash flow hedging instruments:
Unrealized net holding loss in cash flow hedging instruments arising during the period	(129)	0	(1,017)	0
Reclassification adjustment for net losses in cash flow hedging instruments included in income	62	0	57	0
Income tax benefit	17	0	250	0
Unrealized net losses on cash flow hedge instruments, net of reclassification adjustment	(50)	0	(710)	0
Other comprehensive income, net of tax	11,671	4,246	14,176	7,284
Comprehensive income	$ 23,383	$ 14,920	$ 23,913	$ 25,243