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Loan Servicing | 12 Months Ended
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Dec. 31, 2012
Loan Servicing [Abstract] |
Loan Servicing | Note 9 – Loan Servicing Loans serviced for others are not included in the accompanying consolidated balance sheets. The unpaid principal balances of loans serviced for others totaled approximately $772.1 million and $599.1 million at December 31, 2012 and 2011. The aggregate fair value of capitalized mortgage servicing rights was approximately $6.6 million, $5.4 million, and $3.7 million at December 31, 2012, 2011 and 2010, compared to the carrying values of $5.1 million, $4.2 million and $3.4 million, respectively. Comparable market values and a valuation model that calculates the present value of future cash flows were used to estimate fair value. For purposes of measuring impairment, risk characteristics including product type, investor type and interest rates, were used to stratify the originated mortgage servicing rights.
|  | December 31 2012 |  |  | December 31 2011 |  |  | December 31 2010 |
Mortgage servicing rights |  |  |  |  |  |  |  |  |  |  |  |
Balances, January 1 |  | $ | 5,049 |  |  | $ | 4,175 |  |  | $ | 3,010 |
Servicing rights capitalized |  |  | 2,439 |  |  |  | 1,866 |  |  |  | 2,000 |
Amortization of servicing rights |  |  | (1,319 | ) |  |  | (992 | ) |  |  | (835 | )
Balances, December 31 |  |  | 6,169 |  |  |  | 5,049 |  |  |  | 4,175 |
Impairment allowance |  |  |  |  |  |  |  |  |  |  |  |
Balances, January 1 |  |  | (856 | ) |  |  | (803 | ) |  |  | (139 | )
Additions |  |  | (762 | ) |  |  | (792 | ) |  |  | (776 | )
Reductions |  |  | 594 |  |  |  | 739 |  |  |  | 112 |
Balances, December 31 |  |  | (1,024 | ) |  |  | (856 | ) |  |  | (803 | )
Mortgage servicing rights, net |  | $ | 5,145 |  |  | $ | 4,193 |  |  | $ | 3,372 |
During 2012, 2011 and 2010, the Bank recorded additional impairment of approximately $168,000, $53,000 and $664,000.

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