Summary of FHLB Advances (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
FHLB Advances
Maturing within one year, Amount	$ 559,084	$ 720,000
Maturing within one year, Weighted rate	0.24%	0.28%
Maturing one year through two years, Amount	77,979	0
Maturing one year through two years, Weighted rate	3.36%	0.00%
Maturing two years through three years, Amount	45,042	75,000
Maturing two years through three years, Weighted rate	2.99%	3.48%
Maturing three years through four years, Amount	0	45,000
Maturing three years through four years, Weighted rate	0.00%	2.99%
Maturing four years through five years, Amount	20,250	0
Maturing four years through five years, Weighted rate	2.83%	0.00%
Thereafter, Amount	137,827	157,013
Thereafter, Weighted rate	3.12%	3.07%
Total, Amount	$ 840,182	$ 997,013
Total, Weighted rate	1.21%	1.09%