Securities (Fair value and gross unrealized losses) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Available-for-sale Securities
Less than 12 months, fair value	$ 57,370	$ 74,130
Less than 12 months, unrealized (losses)	(1,015)	(2,075)
12 months or more, fair value	4,921	16,989
12 months or more, unrealized (losses)	(79)	(1,700)
Total, fair value	62,291	91,119
Total, unrealized (losses)	(1,094)	(3,775)
Held-to-maturity Securities
Less than 12 months, fair value	0	15,828
Less than 12 months, unrealized (losses)	0	(485)
12 months or more, fair value	14,940	0
12 months or more, unrealized (losses)	(60)	0
Total, fair value	14,940	15,828
Total, unrealized (losses)	(60)	(485)
Agency CMOs [Member]
Held-to-maturity Securities
Less than 12 months, fair value		1,312
Less than 12 months, unrealized (losses)		(1)
12 months or more, fair value		0
12 months or more, unrealized (losses)		0
Total, fair value		1,312
Total, unrealized (losses)		(1)
Corporate debt securities [Member]
Held-to-maturity Securities
Less than 12 months, fair value	0	14,516
Less than 12 months, unrealized (losses)	0	(484)
12 months or more, fair value	14,940	0
12 months or more, unrealized (losses)	(60)	0
Total, fair value	14,940	14,516
Total, unrealized (losses)	(60)	(484)
Agency CMOs [Member]
Available-for-sale Securities
Less than 12 months, fair value	47,733	49,793
Less than 12 months, unrealized (losses)	(694)	(175)
12 months or more, fair value	0	0
12 months or more, unrealized (losses)	0	0
Total, fair value	47,733	49,793
Total, unrealized (losses)	(694)	(175)
Private-label CMOs [Member]
Available-for-sale Securities
Less than 12 months, fair value		6,017
Less than 12 months, unrealized (losses)		(268)
12 months or more, fair value		16,989
12 months or more, unrealized (losses)		(1,700)
Total, fair value		23,006
Total, unrealized (losses)		(1,968)
Corporate debt securities [Member]
Available-for-sale Securities
Less than 12 months, fair value	9,637	18,320
Less than 12 months, unrealized (losses)	(321)	(1,632)
12 months or more, fair value	4,921	0
12 months or more, unrealized (losses)	(79)	0
Total, fair value	14,558	18,320
Total, unrealized (losses)	$ (400)	$ (1,632)