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Regulatory Matters (Details Textual)
 12 Months Ended
Dec. 31, 2018
Regulatory Matters (Textual)  
Capital conservation buffer percentage, description The capital conservation buffer is phasing in from 0.0 percent for 2015 to 2.50 percent for 2019. The capital conservation buffer was 1.875 percent at December 31, 2018 and was fully phased in to 2.50 percent at January 1, 2019.