CONSOLIDATED CONDENSED STATEMENTS OF COMPREHENSIVE INCOME (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Statement of Comprehensive Income [Abstract]
Net income	$ 16,122	$ 10,403	$ 44,902	$ 33,083
Other comprehensive income net of tax:
Unrealized holding gain (loss) on securities available for sale arising during the period, net of tax of $152, $470, $6,105 and $6,810	283	(873)	11,338	(12,646)
Unrealized gain (loss) on securities available for sale for which a portion of an other than temporary impairment has been recognized in income, net of tax of $103, $916 and $48	(1)	(192)	1,701	89
Unrealized gain (loss) on cash flow hedges arising during the period, net of tax of $10, $86, $885 and $543	18	(162)	(1,645)	1,007
Amortization of items previously recorded in accumulated other comprehensive income, net of tax of $39 and $423		73		786
Reclassification adjustment for losses included in net income, net of tax of $194, $72, $450 and $35	(360)	135	(834)	65
Period change	(60)	(1,019)	10,560	(10,699)
Comprehensive income	$ 16,062	$ 9,384	$ 55,462	$ 22,384