Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Net Income	$ 12,414	$ 12,496	$ 40,082	$ 36,724
Other comprehensive income (loss), before tax (expense) benefit:
Unrealized holding gains (losses) on securities arising from during the period	6,344	(5,544)	12,510	16,863
Less: reclassification adjustment for gains on securities included in net income	0	(48)	(125)	(50)
Unrealized holding gains (losses) on derivatives arising from during the period	1,504	(27)	2,172	(27)
Less: reclassification adjustment for losses (gains) on derivatives included in net income	0	1	(6)	1
Total other comprehensive income (loss), before tax (expense) benefit	7,848	(5,618)	14,551	16,787
Income tax (expense) benefit related to items of other comprehensive income (loss)	(2,747)	1,964	(5,091)	(5,875)
Total other comprehensive income (loss)	5,101	(3,654)	9,460	10,912
Comprehensive Income	$ 17,515	$ 8,842	$ 49,542	$ 47,636