COVID-19 and CARES Act Loan Activities (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2020 USD ($) Customer Loan
One Time [Member]
COVID-19 [Abstract]
Number of loan deferrals | Customer	3,481
Amount of loan deferrals	$ 670,000
Two Times [Member]
COVID-19 [Abstract]
Number of loan deferrals | Customer	294
Amount of loan deferrals	$ 234,000
Three Times [Member]
COVID-19 [Abstract]
Number of loan deferrals | Customer	63
Amount of loan deferrals	$ 85,000
Four Times [Member]
COVID-19 [Abstract]
Number of loan deferrals | Customer	6
Amount of loan deferrals	$ 3,000
Outstanding [Member]
COVID-19 [Abstract]
Number of loan deferrals | Customer	410
Amount of loan deferrals	$ 130,000
Resumed Payments [Member]
COVID-19 [Abstract]
Number of loan deferrals | Loan	3,071
Amount of loan deferrals	$ 540,000
Paycheck Protection Program [Member]
COVID-19 [Abstract]
Amount of PPP loans forgiven by SBA	18,800
Additional information related to our PPP loans [Abstract]
Average balance	182,008
Interest	$ 5,638
Average effective rate	0.0305
Commercial Loan [Member] | One Time [Member]
COVID-19 [Abstract]
Number of loan deferrals | Customer	841
Amount of loan deferrals	$ 571,000
Commercial Loan [Member] | Two Times [Member]
COVID-19 [Abstract]
Number of loan deferrals | Customer	153
Amount of loan deferrals	$ 223,000
Commercial Loan [Member] | Three Times [Member]
COVID-19 [Abstract]
Number of loan deferrals | Customer	45
Amount of loan deferrals	$ 83,000
Commercial Loan [Member] | Four Times [Member]
COVID-19 [Abstract]
Number of loan deferrals | Customer	5
Amount of loan deferrals	$ 3,000
Commercial Loan [Member] | Outstanding [Member]
COVID-19 [Abstract]
Number of loan deferrals | Customer	109
Amount of loan deferrals	$ 118,000
Residential Loan [Member] | One Time [Member]
COVID-19 [Abstract]
Number of loan deferrals | Customer	552
Amount of loan deferrals	$ 63,000
Residential Loan [Member] | Two Times [Member]
COVID-19 [Abstract]
Number of loan deferrals | Customer	100
Amount of loan deferrals	$ 10,000
Residential Loan [Member] | Three Times [Member]
COVID-19 [Abstract]
Number of loan deferrals | Customer	15
Amount of loan deferrals	$ 2,000
Residential Loan [Member] | Four Times [Member]
COVID-19 [Abstract]
Number of loan deferrals | Customer	1
Amount of loan deferrals	$ 0
Residential Loan [Member] | Outstanding [Member]
COVID-19 [Abstract]
Number of loan deferrals | Customer	108
Amount of loan deferrals	$ 9,000
Consumer Loan [Member] | One Time [Member]
COVID-19 [Abstract]
Number of loan deferrals | Customer	2,088
Amount of loan deferrals	$ 36,000
Consumer Loan [Member] | Two Times [Member]
COVID-19 [Abstract]
Number of loan deferrals | Customer	41
Amount of loan deferrals	$ 1,000
Consumer Loan [Member] | Three Times [Member]
COVID-19 [Abstract]
Number of loan deferrals | Customer	3
Amount of loan deferrals	$ 0
Consumer Loan [Member] | Four Times [Member]
COVID-19 [Abstract]
Number of loan deferrals | Customer	0
Amount of loan deferrals	$ 0
Consumer Loan [Member] | Outstanding [Member]
COVID-19 [Abstract]
Number of loan deferrals | Customer	193
Amount of loan deferrals	$ 3,000
COVID-19 [Member]
COVID-19 [Abstract]
Period of waivers of overdraft/returned item fees and telephone transfer fees	30 days
Number of loan deferrals | Loan	3,844
Amount of loan deferrals	$ 992,000
COVID-19 [Member] | Paycheck Protection Program [Member]
COVID-19 [Abstract]
Number of loans closed | Loan	2,962
Amount of loans closed	$ 277,000
COVID-19 [Member] | PPP Loans Under $350 Thousand [Member]
COVID-19 [Abstract]
Number of loans closed | Loan	2,817
COVID-19 [Member] | PPP Loans Between $350 Thousand and $2.0 Million [Member]
COVID-19 [Abstract]
Number of loans closed | Loan	132
COVID-19 [Member] | PPP Loans Over $2.0 Million [Member]
COVID-19 [Abstract]
Number of loans closed | Loan	13