Fair Value Measurements (Details 7) $ in Thousands	12 Months Ended
	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Gain on Sale of Investments	$ 10,609	$ 8,669	$ 7,478
Fair Value, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	102,274	28,811
Fair Value, Nonrecurring [Member] | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	98,114	27,728
Non Purchased Credit Impaired Loans and Leases | Fair Value, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	102,274	28,706
Non Purchased Credit Impaired Loans and Leases | Fair Value, Nonrecurring [Member] | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	98,114	$ 27,623
Discount Rates [Member] | Discounted Cash Flow [Member] | Fair Value, Nonrecurring [Member] | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	$ 69,530
Discount Rates [Member] | Minimum | Discounted Cash Flow [Member] | Non Purchased Credit Impaired Loans and Leases | Fair Value, Nonrecurring [Member] | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired Loans, Measurement Input	0.0375
Discount Rates [Member] | Maximum | Discounted Cash Flow [Member] | Non Purchased Credit Impaired Loans and Leases | Fair Value, Nonrecurring [Member] | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired Loans, Measurement Input	0.0775
Discounts [Member] | Third party appraisals [Member] | Fair Value, Nonrecurring [Member] | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	$ 23,202
Discounts [Member] | Third party appraisals [Member] | Non Purchased Credit Impaired Loans and Leases | Fair Value, Nonrecurring [Member] | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired Loans, Measurement Input	0.3200
No Discounts [Member] | Third party appraisals [Member] | Fair Value, Nonrecurring [Member] | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	$ 5,382
Measurement Input, Discount Rate | Discount Rates [Member] | Weighted Average [Member] | Discounted Cash Flow [Member] | Non Purchased Credit Impaired Loans and Leases | Fair Value, Nonrecurring [Member] | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired Loans, Measurement Input	0.0609
Measurement Input, Discount Rate | Discounts [Member] | Weighted Average [Member] | Third party appraisals [Member] | Non Purchased Credit Impaired Loans and Leases | Fair Value, Nonrecurring [Member] | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired Loans, Measurement Input	0.3200