Summary of FHLB Put Options (Details) (USD $) In Thousands, unless otherwise specified			12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013 FHLB Put Options
FHLB Put Options
Maturing during the year ended December 31, 2015, Amount	$ 77,979	$ 0	$ 75,000
Maturing during the year ended December 31, 2015, Interest rate			3.16% - 3.64%
Maturing during the year ended December 31, 2016, Amount	45,042	75,000	45,000
Maturing during the year ended December 31, 2016, Interest rate			2.93% - 3.05%
Maturing during the year ended December 31, 2018, Amount	20,250	0	20,000
Maturing during the year ended December 31, 2018, Interest rate			2.73% - 2.85%
Maturing during the year ended December 31, 2021, Amount	137,827	157,013	135,000
Maturing during the year ended December 31, 2021, Interest rate			2.88% - 3.43%
FHLB advances	$ 840,182	$ 997,013	$ 275,000