CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Condensed Consolidated Statements of Comprehensive Income [Abstract]
Net income	$ 16,961	$ 15,701
Other comprehensive income (loss):
Change in fair value of cash flow hedges	(2,681)	(1,490)
Reclassification adjustment for losses (gains) included in net income (net of tax, $76 and $146 for the three months ended March 31, 2016 and 2015, respectively)	141	272
Unrealized (losses) gains on securities:
Unrealized holding gains (losses) arising during period (net of tax, $1633 and $2037 for the three months ended March 31, 2016 and 2015, respectively)	3,032	3,783
Reclassification adjustment for losses (gains) included in net income (net of tax, $50 and $68 for the three months ended March 31, 2016 and 2015, respectively)	(93)	(125)
Accretion of unrealized gain for AFS securities transferred to HTM (net of tax, $157 and $0 for the three months ended March 31, 2016 and 2015, respectively)	(292)
Other comprehensive income (loss)	107	2,440
Comprehensive income	$ 17,068	$ 18,141