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Condensed Consolidated Statements Of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Statement of Comprehensive Income [Abstract]
Net income	$ 23,623	$ 21,358
Other comprehensive income:
Unrealized gains on securities available for sale and interest only strips	15,592	5,255
Reclassification adjustments for gains realized in income	0	(424)
Tax expense	6,605	2,048
Change in unrealized gains or losses on securities available for sale and interest only strips	8,987	2,783
Total comprehensive income	$ 32,610	$ 24,141

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Other comprehensive income unrealized gain loss on securities available for sale and interest only strips arising during period 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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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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