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Fair Value Measurements (Details 2) (Collateralized Mortgage Backed Securities [Member], USD $)
In Thousands, unless otherwise specified
9 Months Ended
Sep. 30, 2014
Collateralized Mortgage Backed Securities [Member]
 
Reconciliation of activity for mortgage-backed securities on a net basis  
Balance at the beginning of the period $ 27,852
Principal paydowns (3,014)
Total unrealized gains included in:  
Other comprehensive income 667
Impairment realized in earnings (552)
Balance at the end of the period $ 24,953