CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Statement of Comprehensive Income [Abstract]
Net income	$ 11,228	$ 12,918
Other comprehensive income (loss):
Unrealized holding gains arising during the period before tax	2,481	4,144
Unrealized gains (losses) on securities available for sale	2,481	4,144
Unrealized holding losses arising during the period before tax	(7,161)	(1,162)
Less reclassification adjustment for caplet amortization before tax	(110)	(157)
Unrealized losses on derivatives	(7,051)	(1,005)
Other comprehensive income (loss), before tax	(4,570)	3,139
Tax expense (benefit)	(879)	795
Other comprehensive income (loss), net of tax	(3,691)	2,344
Comprehensive income	$ 7,537	$ 15,262