Fair Value Measurements (Details 6) - Non Purchased Credit Impaired Loans and Leases - Fair Value, Measurements, Nonrecurring - Level 3	9 Months Ended
	Sep. 30, 2019
Weighted Average | Discount Rates | Third party appraisals
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Discount rates	0.3191
Measurement Input, Discount Rate | Minimum | Discounted Cash Flow
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Discount rates	0.0375
Measurement Input, Discount Rate | Minimum | Discount Rates | Discounted Cash Flow
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Discount rates	0.0375
Measurement Input, Discount Rate | Maximum | Discounted Cash Flow
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Discount rates	0.0877
Measurement Input, Discount Rate | Maximum | Discount Rates | Discounted Cash Flow
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Discount rates	0.0877
Measurement Input, Discount Rate | Weighted Average | Discounted Cash Flow
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Discount rates	0.0758
Measurement Input, Discount Rate | Weighted Average | Discount Rates | Discounted Cash Flow
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Discount rates	0.0758