CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Statement of Comprehensive Income [Abstract]
Net Income	$ 23,253	$ 16,964	$ 45,958	$ 34,991
Other comprehensive income (loss):
Unrealized gains (losses) on securities available for sale	11,633	(5,995)	24,309	(17,016)
Reclassification of unrealized losses on securities transferred to available for sale upon adoption of new accounting pronouncement	0	0	(730)	0
Amortization of unrealized losses on securities transferred to held to maturity, net	72	218	143	334
Reclassification adjustment for losses included in net income	556	0	643	0
(Provision) benefit for income taxes	(2,774)	1,543	(6,035)	4,439
Total other comprehensive income (loss)	9,487	(4,234)	18,330	(12,243)
Comprehensive Income	$ 32,740	$ 12,730	$ 64,288	$ 22,748

Other Comprehensive Income (Loss), Transfers from Available-for-Sale to Held-to-maturity Securities, Net of Tax

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Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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Amount after tax of other comprehensive income (loss) attributable to parent entity.

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Amount before tax of reclassification adjustment from accumulated other comprehensive income for unrealized gain (loss) realized upon the sale of available-for-sale securities.

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Amount of tax expense (benefit) allocated to other comprehensive income (loss).

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Amount before tax and reclassification adjustments of unrealized holding gain (loss) related to transfers of securities into the available-for-sale classification and out of the held-to-maturity classification.

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