Goodwill and Other Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2012

Finite Lived Intangible Assets [Line Items]

Summary of changes in the carrying amount of goodwill

(Dollars in thousands)
Balance at December 31, 2010	$	51,320
Additions:
Trollinger Consulting Group		1,849
Balance at December 31, 2011	$	53,169
Additions:
Javers Group		3,069
Balance at December 31, 2012	$	56,238

Components of intangible assets

	At December 31, 2012						At December 31, 2011
(Dollars in thousands)	Gross Carrying Amount		Accumulated Amortization and Fair Value Adjustments		Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization and Fair Value Adjustments		Net Carrying Amount
Amortized intangible assets:
Covenants not to compete	$	—	$	—	$	—	$	320	$	320	$	—
Branch acquisitions		—		—		—		2,951		2,951		—
Core deposit intangibles		2,201		2,201		—		2,201		2,148		53
Customer related intangibles		6,250		3,946		2,304		5,291		3,213		2,078
Mortgage servicing rights		8,480		4,328		4,152		5,753		3,014		2,739
Total amortized intangible assets	$	16,931	$	10,475	$	6,456	$	16,516	$	11,646	$	4,870

Estimated aggregate amortization expense

Year	(Dollars in thousands)	Amount
2013		$	683
2014			543
2015			404
2016			265
2017			196
Thereafter			213

Changes in mortgage servicing rights balance

	For the Years Ended December 31,
(Dollars in thousands)	2012			2011			2010
Beginning balance	$	2,739		$	2,441		$	1,437
Servicing rights capitalized		2,727			1,555			1,380
Amortization of servicing rights		(1,610	)		(665	)		(425	)
Changes in valuation allowance		296			(592	)		49
Ending balance	$	4,152		$	2,739		$	2,441
Mortgage loans serviced for others	$	604,801		$	418,224		$	306,403

Activity in valuation allowance for mortgage servicing rights

	For the Years Ended December 31,
(Dollars in thousands)	2012			2011			2010
Beginning balance	$	(793	)	$	(201	)	$	(250	)
Additions		—			(592	)		—
Reductions		296			—			49
Direct write-downs		—			—			—
Ending balance	$	(497	)	$	(793	)	$	(201	)

Mortgage servicing rights [Member]

Finite Lived Intangible Assets [Line Items]

Estimated aggregate amortization expense

Year	(Dollars in thousands)	Amount
2013		$	896
2014			716
2015			555
2016			440
2017			340
Thereafter			1,205