Acquired Loans Part 2 (Details) - USD ($) $ in Thousands		6 Months Ended		12 Months Ended
		Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Change in accretable difference on acquired loans [Abstract]
Accretable yield at beginning of period		$ (77,149)	$ (109,006)	$ (109,006)
Accretion to interest income		18,449	25,518
Disposals		4,700	10,791
Reclassification to / (from) nonaccretable difference	[1]	(9,943)	(20,094)
Accretable yield at end of period		$ (63,943)	$ (92,791)	$ (77,149)

[1] Reclassifications from nonaccretable difference are due to lower loss expectations and improvements in expected cash flows.