Loans Receivable (Accretable yield and non-accretable discount activity) (Details) (Acquired under ASC 310-30 Non-Covered Loans [Member], USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Acquired under ASC 310-30 Non-Covered Loans [Member]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Movement Schedule [Roll Forward]
Balance at beginning of period	$ 444,606	$ 561,485	$ 517,553	$ 655,833
Additions accretable	0	0	0	0
Accretion Accretable	(38,340)	(48,352)	(118,323)	(150,447)
Transfer from (to) non-accretable discount	(2,136)	6,010	4,900	13,757
Balance at end of period	404,130	519,143	404,130	519,143
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Non Accretable Discount Movement Schedule [Roll Forward]
Balance at beginning of period	554,724	686,231	579,587	714,462
Additions non-accretable	0	0	0	0
Principal Losses	(32,873)	(44,301)	(50,700)	(64,785)
Transfer (to) from accretable yield	2,136	(6,010)	(4,900)	(13,757)
Balance at end of period	$ 523,987	$ 635,920	$ 523,987	$ 635,920