Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Statement of Comprehensive Income [Abstract]
Net income	$ 14,319	$ 12,773	$ 29,449	$ 23,322
Other comprehensive income:
Unrealized gain/(loss) on securities, net of tax	(1,576)	3,016	(758)	6,256
Comprehensive income	$ 12,743	$ 15,789	$ 28,691	$ 29,578