Fair Value Disclosures of Financial Assets and Liabilities - Fair Value Measurement Inputs and Valuation Techniques (Details) - Significant Unobservable Inputs (Level 3) $ in Thousands	12 Months Ended
	Dec. 31, 2020 USD ($)
Observed market comparable transactions
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Other investments	$ 9,541
Fair market value of collateral
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Other real estate owned	$ 3,061
Fair market value of collateral | Costs to sell | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Other real estate owned	0.050
Fair market value of collateral | Costs to sell | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Other real estate owned	0.100
Fair market value of collateral | Costs to sell | Weighted Average
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Other real estate owned	0.100
Discounted cash flow
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Other liabilities	$ 24,039
Discounted cash flow | Timing of the resolution of the Visa litigation | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Other liabilities	2 years 9 months
Discounted cash flow | Timing of the resolution of the Visa litigation | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Other liabilities	7 years 9 months
Discounted cash flow | Timing of the resolution of the Visa litigation | Weighted Average
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Other liabilities	5 years 6 months