Consolidated Statements of Comprehensive Income (unaudited) (Parenthetical) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Statement of Comprehensive Income [Abstract]
Net unrealized (loss) on cashflow hedge	$ (1,412)	$ (1,211)
Net unrealized (loss) on cashflow hedge, deferred tax	(522)	(448)
Net unrealized gain (loss) on available for sale debt securities	729	3,186
Net unrealized gain (loss) on available for sale debt securities, deferred taxes	270	1,179
Net unrealized gain on available for sale debt securities, reclassification adjustment for net realized gains (losses) included in net income	$ 480	$ (22)