Goodwill and Other Intangible Assets (Details 1) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Finite-lived Intangible Assets [Roll Forward]
Balance, beginning of year				$ 53,090				$ 48,963	$ 53,090	$ 48,963	$ 45,412
Balance, beginning of year				(35,886)				(31,715)	(35,886)	(31,715)	(30,689)
Additions due to acquisitions									45,426	6,720	7,927
Additions	$ (17,600)	$ (747)	$ (900)	$ (2,000)	$ (7,381)	$ (5,193)	$ (86,242)	$ (2,200)	(9,410)	(6,268)	(5,402)
Fully amortized portion									(2,992)	(1,293)	(4,376)
Write-off due to the asset financing segment reorganization									0	(804)	0
Balance, end of year	95,524				53,090				95,524	53,090	48,963
Net CDI and CRI, end of year	53,220				17,204				53,220	17,204	17,248
Net CDI and CRI, end of year	$ (42,304)				$ (35,886)				(42,304)	(35,886)	(31,715)
CDI and CRI [Member]
Finite-lived Intangible Assets [Roll Forward]
Fully amortized portion									(2,992)	(1,293)	(4,376)
Write-off due to the asset financing segment reorganization									$ 0	$ (1,300)	$ 0