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Significant Accounting Policies (Details) - Core Deposits
6 Months Ended
Jun. 30, 2019
Minimum  
New Accounting Pronouncements or Change in Accounting Principle [Line Items]  
Weighted average useful life (in years) 6 years
Maximum  
New Accounting Pronouncements or Change in Accounting Principle [Line Items]  
Weighted average useful life (in years) 10 years