CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Statement of Comprehensive Income [Abstract]
Net Income		$ 159,718	$ 123,340	$ 60,100
Other comprehensive income, net of tax:
Unrealized holding gains/(losses) on securities arising during the period, net of income tax (benefits)	[1]	33,226	(5,019)	4,937
Reclassification adjustment for net gain on sale of securities included in net income, net of income taxes	[2]	(6,102)	(1,079)	(1,801)
Other comprehensive (loss) income, net of tax		27,124	(6,098)	3,136
Comprehensive income, net of tax		$ 186,842	$ 117,242	$ 63,236

[1] Income tax (benefit) on unrealized holding gains (losses) on securities was $13.4 million for 2019, ($2.2 million) for 2018 and $3.1 million for 2017.

[2] Income tax on reclassification adjustment for net gain on sale of securities included in net income was $2.5 million for 2019, $320,000 for 2018 and $936,000 for 2017.