Allowance For Loan Losses (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2020	Dec. 31, 2019
Financing Receivable, Allowance for Credit Loss, Writeoff, after Recovery [Abstract]
PPP loans originated [Line Items]	$ 542,800
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans collectively evaluated for impairment	7,150,531	$ 7,150,531	$ 6,409,614
Loan balance	7,278,546	7,278,546	$ 6,501,404
7000 Hotels, Rooming Houses, Camps and Other Lodging Places
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans collectively evaluated for impairment	86,041	86,041
Additional Reserve Pandemic Risk		1,435
Loan balance	178,800	178,800
7000 Hotels, Rooming Houses, Camps and Other Lodging Places | Financial Asset Originated
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans collectively evaluated for impairment	85,050	85,050
Additional Reserve Pandemic Risk		1,800
7000 Hotels, Rooming Houses, Camps and Other Lodging Places | Financial Asset Acquired and No Credit Deterioration
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans collectively evaluated for impairment	991	991
722110 Full-Service Restaurants
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans collectively evaluated for impairment	34,263	34,263
Additional Reserve Pandemic Risk		658
722110 Full-Service Restaurants | Financial Asset Originated
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans collectively evaluated for impairment	28,291	28,291
722110 Full-Service Restaurants | Financial Asset Acquired and No Credit Deterioration
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans collectively evaluated for impairment	5,972	5,972
5331 Retail, Variety Stores
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans collectively evaluated for impairment	181,517	181,517
Additional Reserve Pandemic Risk		1,789
5331 Retail, Variety Stores | Financial Asset Originated
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans collectively evaluated for impairment	158,790	158,790
5331 Retail, Variety Stores | Financial Asset Acquired and No Credit Deterioration
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans collectively evaluated for impairment	22,727	22,727
Hotels, Restaurants, Strip Shopping Total
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans collectively evaluated for impairment	301,821	301,821
Additional Reserve Pandemic Risk		3,882
Hotels, Restaurants, Strip Shopping Total | Financial Asset Originated
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans collectively evaluated for impairment	272,131	272,131
Hotels, Restaurants, Strip Shopping Total | Financial Asset Acquired and No Credit Deterioration
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans collectively evaluated for impairment	$ 29,690	$ 29,690