Borrowings (Tables)

12 Months Ended

Dec. 31, 2012

Debt Disclosure [Abstract]

Advances from FHLB

	December 31, 2012				December 31, 2011
(Dollars in thousands)	Amount		Weighted Rate		Amount	Weighted Rate
Maturing within one year	$	720,000	0.28	%	792,000	0.68	%
Maturing one year through two years	—		—	%	—	—	%
Maturing two years through three years	75,000		3.48	%	—	—	%
Maturing three years through four years	45,000		2.99	%	75,000	3.48	%
Maturing four years through five years	—		—	%	45,000	2.99	%
Thereafter	157,013		3.07	%	157,046	3.07	%
Total	$	997,013	1.09	%	1,069,046	1.32	%

Summary of FHLB put options

(Dollars in thousands)	Amount		Interest Rate
Maturing during years ending December 31,
2015	$	75,000	3.16% - 3.64%
2016	45,000		2.93% - 3.05%
2018	20,000		2.73% - 2.85%
2021	135,000		2.88% - 3.43%
	$	275,000