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
Statement of Comprehensive Income [Abstract]
Net income		$ 10,208	$ 10,538	$ 32,721	$ 29,633
Other comprehensive income, net of tax:
Net change in fair value of securities available for sale		344	(953)	(693)	1,476
Cash flow hedges:
Change in fair value of cash flow hedges		(1)	1	(10)	(29)
Net cash flow hedge losses reclassified into earnings	[1]	82	92	265	277
Net change in fair value of cash flow hedges		81	93	255	248
Defined benefit plan obligation adjustment	[2]	233	81	822	250
Total other comprehensive (loss) income, net of tax		658	(779)	384	1,974
Total comprehensive income		$ 10,866	$ 9,759	$ 33,105	$ 31,607

[1] Included in interest expense on junior subordinated debentures in the Consolidated Statements of Income.

[2] Included in salaries and employee benefits expense in the Consolidated Statements of Income.