Derivative Financial Instruments - Interest Swap Derivatives (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional Value	$ 840,646	$ 625,491
Derivative, fair value	(37,939)	(11,087)
Interest rate swaps assets | Derivatives designated as hedging instruments
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional Value	$ 515,646	$ 524,126
Weighted Average Remaining Maturity (years)	5 years 3 months 18 days	6 years 3 months 18 days
Fair Value	$ (24,357)	$ (4,790)
Weighted-Average Rate	2.80%	2.80%
Cash pledged as collateral	$ 42,300	$ 7,000
Loans | Derivatives designated as hedging instruments
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Fair Value	21,440	4,961
Loans | Interest rate swaps assets | Derivatives designated as hedging instruments
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional Value	$ 427,446	$ 435,926
Weighted Average Remaining Maturity (years)	5 years 6 months	6 years 6 months
Fair Value	$ (21,551)	$ (5,025)
Weighted-Average Rate	2.86%	2.86%
Securities available-for-sale | Derivatives designated as hedging instruments
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Fair Value	$ 2,802	$ (229)
Securities available-for-sale | Interest rate swaps assets | Derivatives designated as hedging instruments
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional Value	$ 88,200	$ 88,200
Weighted Average Remaining Maturity (years)	4 years 1 month 6 days	5 years 1 month 6 days
Fair Value	$ (2,806)	$ 235
Weighted-Average Rate	2.54%	2.54%
3 Month LIBOR | Interest rate swaps assets | Derivatives designated as hedging instruments
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional Value	$ 110,000	$ 110,000
Weighted Average Remaining Maturity (years)	7 years 1 month 6 days	8 years 1 month 6 days
Derivative, fair value	$ (8,390)	$ (2,293)
Derivative, variable interest rate	2.88%	2.88%
1 Month LIBOR | Interest rate swaps assets | Derivatives designated as hedging instruments
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional Value	$ 100,000	$ 100,000
Weighted Average Remaining Maturity (years)	4 years	5 years
Derivative, fair value	$ (5,040)	$ (2,065)
Derivative, variable interest rate	2.88%	2.88%