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Mortgage Servicing Rights (Tables)
12 Months Ended
Dec. 31, 2011
Transfers and Servicing [Abstract]  
Summary of Changes in Mortgage Servicing Rights
The following table summarizes the changes in MSRs, which are included in other assets on the consolidated balance sheets:
 
2011
 
2010
 
(in thousands)
Amortized cost:
 
 
 
Balance at beginning of year
$
30,700

 
$
23,498

Originations of mortgage servicing rights
9,884

 
12,240

Amortization expense
(5,918
)
 
(5,038
)
Balance at end of year
$
34,666

 
$
30,700

Valuation allowance:
 
 
 
Balance at beginning of year
$
(1,550
)
 
$
(1,000
)
Additions

 
(550
)
Balance at end of year
$
(1,550
)
 
$
(1,550
)
Net MSRs at end of year
$
33,116

 
$
29,150

Schedule Of Servicing Assets Expected Amortization Expense
Estimated MSR amortization expense for the next five years, based on balances as of December 31, 2011 and the expected remaining lives of the underlying loans, follows (in thousands):
Year
 
2012
$
7,356

2013
6,671

2014
5,904

2015
5,051

2016
4,103