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Mortgage Banking and Servicing Rights (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Mortgage Banking and Servicing Rights [Abstract]      
Net gain on sale of loans held for sale $ 3,098 $ 2,562 $ 1,749
Net loan servicing income (expense)      
Servicing fees 1,121 1,083 1,072
Late fees 98 83 77
Ancillary fees 368 382 278
Fair value adjustments 206 (559) (1,405)
Net loan servicing income 1,793 989 22
Mortgage banking income 4,891 3,551 1,771
Loan service for benefit of others 440 419 425
Escrow deposit 855 673 579
Servicing Asset at Fair Value, Amount [Roll Forward]      
Fair value of MSRs, beginning of period 2,364 2,282 3,161
New servicing assets created 854 641 526
Change in fair value during the period due to:      
Time decay (159) [1] (116) [1] (124) [1]
Payoffs (423) [2] (478) [2] (439) [2]
Changes in valuation inputs or assumptions 788 [3] 35 [3] (842) [3]
Fair value of MSRs, end of period $ 3,424 $ 2,364 $ 2,282
Discount rate of servicing assets and servicing liabilities (in hundredths) 10.00% 10.50% 10.00%
Weighted average default rates (in hundredths) 3.36% 2.65% 2.61%
Prepayment using andrew davidson model (in hundredths) 9.70% 16.30% 19.20%
[1] Represents decrease in value due to regularly scheduled loan principal payments and partial loan paydowns.
[2] Represents decrease in value due to loans that paid off during the period.
[3] Represents change in value resulting from market-driven changes in interest rates.