The estimated net amount of existing gains or losses on cash flow hedges at the reporting date expected to be reclassified to earnings within the next 12 months.

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Nominal or face amount used to calculate payments on the derivative asset.

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Average remaining period until maturity of the derivative contract, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement.

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Fair value, before effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement.

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Fair value of the assets less the liabilities of a derivative or group of derivatives.

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The net change in the difference between the fair value and the carrying value, or in the comparative fair values, of derivative instruments, including options, swaps, futures, and forward contracts, held at each balance sheet date, that was included in earnings for the period.

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Derivative Financial Instruments (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended	12 Months Ended
	Sep. 30, 2020	Mar. 31, 2020	Sep. 30, 2020	Dec. 31, 2019
Derivative financial instrument according to type of hedge [Abstract]
Unrealized losses on cash flow hedges, net of tax			$ (1,100)
Fair value of derivative instruments, balance sheet location [Abstract]
Asset Derivatives	$ 19,202		19,202	$ 5,464
Liability Derivatives	12,690		12,690	4,402
Interest-Rate Cap Agreements [Member]
Derivative financial instrument according to type of hedge [Abstract]
Unrealized loss on derivative instrument to be reclassified into earnings	(500)	$ (2,000)
Cash Flow Hedge Designation [Member]
Derivative financial instrument according to type of hedge [Abstract]
Notional Amount				$ 175,000
Average Maturity				2 years 6 months
Fair Value				$ 40
Cash Flow Hedge Designation [Member] \| Interest-Rate Cap Agreements [Member]
Derivative financial instrument according to type of hedge [Abstract]
Notional Amount				$ 150,000
Average Maturity				2 years 7 months 6 days
Fair Value				$ 214
Designated as Hedging Instrument [Member]
Fair value of derivative instruments, balance sheet location [Abstract]
Asset Derivatives	0		0	214
Liability Derivatives	860		860	416
No Hedge Designation [Member]
Derivative financial instrument according to type of hedge [Abstract]
Notional Amount	899,924		$ 899,924	$ 458,279
Average Maturity			1 year 10 months 24 days	3 years 8 months 12 days
Fair Value	7,372		$ 7,372	$ 1,264
Fair value of derivative instruments, balance sheet location [Abstract]
Asset Derivatives	19,202		19,202	5,250
Liability Derivatives	11,830		11,830	3,986
No Hedge Designation [Member] \| Rate-Lock Mortgage Loan Commitments [Member]
Derivative financial instrument according to type of hedge [Abstract]
Notional Amount	196,646		$ 196,646	$ 49,268
Average Maturity			1 month 6 days	1 month 6 days
Fair Value	8,356		$ 8,356	$ 1,412
No Hedge Designation [Member] \| Mandatory Commitments to Sell Mortgage Loans [Member]
Derivative financial instrument according to type of hedge [Abstract]
Notional Amount	232,948		$ 232,948	$ 95,363
Average Maturity			1 month 6 days	1 month 6 days
Fair Value	(580)		$ (580)	$ (150)
No Hedge Designation [Member] \| Interest-Rate Cap Agreements [Member]
Derivative financial instrument according to type of hedge [Abstract]
Notional Amount	150,000		$ 150,000
Average Maturity			1 year 9 months 18 days
Fair Value	5		$ 5
No Hedge Designation [Member] \| Purchased Options [Member]
Derivative financial instrument according to type of hedge [Abstract]
Notional Amount	2,908		$ 2,908	$ 2,908
Average Maturity			9 months 18 days	1 year 6 months
Fair Value	30		$ 30	$ 141
No Hedge Designation [Member] \| Written Options [Member]
Derivative financial instrument according to type of hedge [Abstract]
Notional Amount	2,848		$ 2,848	$ 2,848
Average Maturity			9 months 18 days	1 year 6 months
Fair Value	(30)		$ (30)	$ (139)
Fixed Income Interest Rate [Member] \| Fair Value Hedge Designation [Member] \| Interest Rate Swap [Member]
Derivative financial instrument according to type of hedge [Abstract]
Notional Amount	7,117		$ 7,117	$ 7,117
Average Maturity			8 years 7 months 6 days	9 years 4 months 24 days
Fair Value	(860)		$ (860)	$ (242)
Fixed Income Interest Rate [Member] \| Cash Flow Hedge Designation [Member] \| Interest Rate Swap [Member]
Derivative financial instrument according to type of hedge [Abstract]
Notional Amount				$ 25,000
Average Maturity				1 year 7 months 6 days
Fair Value				$ (174)
Fixed Income Interest Rate [Member] \| No Hedge Designation [Member] \| Interest Rate Swap [Member]
Derivative financial instrument according to type of hedge [Abstract]
Notional Amount	144,787		$ 144,787	$ 153,946
Average Maturity			4 years 8 months 12 days	5 years 6 months
Fair Value	(10,811)		$ (10,811)	$ (3,641)
Fixed Income Interest Rate [Member] \| No Hedge Designation [Member] \| Interest Rate Swap [Member]
Derivative financial instrument according to type of hedge [Abstract]
Notional Amount	25,000		$ 25,000
Average Maturity			9 months 18 days
Fair Value	(409)		$ (409)
Variable Income Interest Rate [Member] \| No Hedge Designation [Member] \| Interest Rate Swap [Member]
Derivative financial instrument according to type of hedge [Abstract]
Notional Amount	144,787		$ 144,787	$ 153,946
Average Maturity			4 years 8 months 12 days	5 years 6 months
Fair Value	10,811		$ 10,811	$ 3,641
Other Assets [Member] \| Designated as Hedging Instrument [Member] \| Interest-Rate Cap Agreements [Member]
Fair value of derivative instruments, balance sheet location [Abstract]
Asset Derivatives	0		0	214
Other Assets [Member] \| No Hedge Designation [Member] \| Rate-Lock Mortgage Loan Commitments [Member]
Fair value of derivative instruments, balance sheet location [Abstract]
Asset Derivatives	8,356		8,356	1,412
Other Assets [Member] \| No Hedge Designation [Member] \| Mandatory Commitments to Sell Mortgage Loans [Member]
Fair value of derivative instruments, balance sheet location [Abstract]
Asset Derivatives	0		0	0
Other Assets [Member] \| No Hedge Designation [Member] \| Interest-Rate Cap Agreements [Member]
Fair value of derivative instruments, balance sheet location [Abstract]
Asset Derivatives	5		5	0
Other Assets [Member] \| No Hedge Designation [Member] \| Purchased Options [Member]
Fair value of derivative instruments, balance sheet location [Abstract]
Asset Derivatives	30		30	141
Other Assets [Member] \| No Hedge Designation [Member] \| Written Options [Member]
Fair value of derivative instruments, balance sheet location [Abstract]
Asset Derivatives	0		0	0
Other Assets [Member] \| Fixed Income Interest Rate [Member] \| Designated as Hedging Instrument [Member] \| Interest Rate Swap [Member]
Fair value of derivative instruments, balance sheet location [Abstract]
Asset Derivatives	0		0	0
Other Assets [Member] \| Fixed Income Interest Rate [Member] \| No Hedge Designation [Member] \| Interest Rate Swap [Member]
Fair value of derivative instruments, balance sheet location [Abstract]
Asset Derivatives	0		0	28
Other Assets [Member] \| Fixed Income Interest Rate [Member] \| No Hedge Designation [Member] \| Interest Rate Swap [Member]
Fair value of derivative instruments, balance sheet location [Abstract]
Asset Derivatives	0		0	0
Other Assets [Member] \| Variable Income Interest Rate [Member] \| No Hedge Designation [Member] \| Interest Rate Swap [Member]
Fair value of derivative instruments, balance sheet location [Abstract]
Asset Derivatives	10,811		10,811	3,669
Other Liabilities [Member] \| Designated as Hedging Instrument [Member] \| Interest-Rate Cap Agreements [Member]
Fair value of derivative instruments, balance sheet location [Abstract]
Liability Derivatives	0		0	0
Other Liabilities [Member] \| No Hedge Designation [Member] \| Rate-Lock Mortgage Loan Commitments [Member]
Fair value of derivative instruments, balance sheet location [Abstract]
Liability Derivatives	0		0	0
Other Liabilities [Member] \| No Hedge Designation [Member] \| Mandatory Commitments to Sell Mortgage Loans [Member]
Fair value of derivative instruments, balance sheet location [Abstract]
Liability Derivatives	580		580	150
Other Liabilities [Member] \| No Hedge Designation [Member] \| Interest-Rate Cap Agreements [Member]
Fair value of derivative instruments, balance sheet location [Abstract]
Liability Derivatives	0		0	0
Other Liabilities [Member] \| No Hedge Designation [Member] \| Purchased Options [Member]
Fair value of derivative instruments, balance sheet location [Abstract]
Liability Derivatives	0		0	0
Other Liabilities [Member] \| No Hedge Designation [Member] \| Written Options [Member]
Fair value of derivative instruments, balance sheet location [Abstract]
Liability Derivatives	30		30	139
Other Liabilities [Member] \| Fixed Income Interest Rate [Member] \| Designated as Hedging Instrument [Member] \| Interest Rate Swap [Member]
Fair value of derivative instruments, balance sheet location [Abstract]
Liability Derivatives	860		860	416
Other Liabilities [Member] \| Fixed Income Interest Rate [Member] \| No Hedge Designation [Member] \| Interest Rate Swap [Member]
Fair value of derivative instruments, balance sheet location [Abstract]
Liability Derivatives	10,811		10,811	3,669
Other Liabilities [Member] \| Fixed Income Interest Rate [Member] \| No Hedge Designation [Member] \| Interest Rate Swap [Member]
Fair value of derivative instruments, balance sheet location [Abstract]
Liability Derivatives	409		409	0
Other Liabilities [Member] \| Variable Income Interest Rate [Member] \| No Hedge Designation [Member] \| Interest Rate Swap [Member]
Fair value of derivative instruments, balance sheet location [Abstract]
Liability Derivatives	$ 0		$ 0	$ 28