CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME [Abstract]
Net income	$ 12,591	$ 17,930
Other comprehensive income Securities available-for-sale:
Change in net unrealized gains during the period	2,122	11,844
Amortization of losses previously held as available-for-sale	5	7
Other comprehensive income	2,127	11,851
Income tax expense related to items of other comprehensive income (loss) Securities available-for-sale:
Change in net unrealized gain during the period	573	3,199
Amortization of losses previously held as available-for-sale	1	2
Income tax expense related to items of other comprehensive income	574	3,201
Other comprehensive income net of tax and reclassifications into net income	1,553	8,650
Comprehensive income	$ 14,144	$ 26,580

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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Amount of tax expense (benefit), after reclassification adjustments, of appreciation (loss) in value of unsold available-for-sale securities, attributable to parent entity. Excludes amounts related to other than temporary impairment (OTTI) loss.

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

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