Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Statement of Comprehensive Income [Abstract]
Net income	$ 79,327	$ 71,695	$ 78,837
Unrealized gains (losses) on available for sale debt securities:
Unrealized gains (losses) arising during the period	49,688	(46,069)	12,266
Income tax effect	(12,919)	11,978	(4,378)
Reclassification adjustments for (gains) losses included in net income	(1,001)	18,659	(8,800)
Income tax effect	260	(4,851)	3,432
Net unrealized gains (losses) on available for sale debt securities	36,028	(20,283)	2,520
Unrealized gains (losses) on cash flow hedges:
Unrealized gains (losses) arising during the period	(21,157)	1,995	666
Income tax effect	5,501	(518)	(260)
Reclassification adjustment for (gains) losses included in net income	1,407	(2,917)	2,634
Income tax effect	(366)	758	(1,027)
Net unrealized gains (losses) on cash flow hedges	(14,615)	(682)	2,013
Other comprehensive income (loss), net of income tax effect	21,413	$ (20,965)	$ 4,533
Comprehensive income (loss)	$ 100,740