Mortgage Servicing Rights (Tables) (Mortgage servicing rights [Member])

3 Months Ended

Mar. 31, 2013

Mortgage servicing rights [Member]

Finite Lived Intangible Assets [Line Items]

Changes in mortgage servicing rights balance

	Three Months Ended March 31,
(Dollars in thousands)	2013			2012
Beginning of period	$	4,152		$	2,739
Servicing rights capitalized		768			427
Amortization of servicing rights		(431	)		(311	)
Changes in valuation allowance		234			212
End of period	$	4,723		$	3,067
Mortgage loans serviced for others	$	648,621		$	448,139

Activity in valuation allowance for mortgage servicing rights

	Three Months Ended March  31,
(Dollars in thousands)	2013			2012
Valuation allowance, beginning of period	$	(497	)	$	(793	)
Additions		—			—
Reductions		234			212
Direct write-downs		—			—
Valuation allowance, end of period	$	(263	)	$	(581	)

Estimated amortization expense of mortgage servicing rights

Year	(Dollars in thousands)	Amount
Remainder of 2013		$	687
2014			793
2015			647
2016			525
2017			415
Thereafter			1,656