Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2017	Mar. 31, 2016
Consolidated Statements of Comprehensive Income
Net income	$ 32,004	$ 32,984
Other comprehensive income (loss), net of tax:
Net unrealized holding gains on securities available for sale arising during period (net of tax effects of $7,198 and $15,254)	13,369	28,328
Reclassification adjustment for (gains) losses on securities available for sale included in net income (net of tax effects of $(324), and $47)	(603)	86
Reclassification adjustment for impairment charges on available for sale securities included in net income (net of tax effects of $0, and $43)		81
Other comprehensive (loss) income, net of tax	12,766	28,495
Comprehensive income	$ 44,770	$ 61,479

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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