Loans, Allowance for Credit Losses and Credit Quality Finance Receivable Credit Quality Indicators (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	$ 1,504,307
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,047,533
Financing Receivable, Originated Three Years before Latest Fiscal Year	970,908
Financing Receivable, Originated Four Years before Latest Fiscal Year	758,331
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	1,445,238
Financing Receivable, Revolving	1,454,822
Financing Receivable, after Allowance for Credit Loss	2,199,885
Loans and Leases Receivable, Gross	9,405,193	$ 8,873,639
Commercial Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	877,770
Financing Receivable, Originated Two Years before Latest Fiscal Year	561,699
Financing Receivable, Originated Three Years before Latest Fiscal Year	616,367
Financing Receivable, Originated Four Years before Latest Fiscal Year	428,865
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	806,109
Financing Receivable, Revolving	39,998
Financing Receivable, after Allowance for Credit Loss	778,315
Loans and Leases Receivable, Gross	4,125,464	4,002,359
Commercial Real Estate [Member] | Potential Weakness [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	15,957
Financing Receivable, Originated Two Years before Latest Fiscal Year	20,313
Financing Receivable, Originated Three Years before Latest Fiscal Year	7,941
Financing Receivable, Originated Four Years before Latest Fiscal Year	27,253
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	47,875
Financing Receivable, Revolving	0
Financing Receivable, after Allowance for Credit Loss	20,639
Loans and Leases Receivable, Gross	139,978
Commercial Real Estate [Member] | Pass [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	859,548
Financing Receivable, Originated Two Years before Latest Fiscal Year	512,371
Financing Receivable, Originated Three Years before Latest Fiscal Year	587,345
Financing Receivable, Originated Four Years before Latest Fiscal Year	399,442
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	751,629
Financing Receivable, Revolving	39,998
Financing Receivable, after Allowance for Credit Loss	753,415
Loans and Leases Receivable, Gross	3,920,089
Commercial Real Estate [Member] | Definite Weakness Loss Unlikely [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	2,265
Financing Receivable, Originated Two Years before Latest Fiscal Year	10,092
Financing Receivable, Originated Three Years before Latest Fiscal Year	21,081
Financing Receivable, Originated Four Years before Latest Fiscal Year	2,170
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	6,605
Financing Receivable, Revolving	0
Financing Receivable, after Allowance for Credit Loss	4,261
Loans and Leases Receivable, Gross	46,474
Commercial Real Estate [Member] | Partial Loss Probable [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	18,923
Financing Receivable, Originated Three Years before Latest Fiscal Year	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0
Financing Receivable, Revolving	0
Financing Receivable, after Allowance for Credit Loss	0
Loans and Leases Receivable, Gross	18,923
Commercial Real Estate [Member] | Definite Loss [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0
Financing Receivable, Revolving	0
Financing Receivable, after Allowance for Credit Loss	0
Loans and Leases Receivable, Gross	0
Commercial And Industrial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	156,992
Financing Receivable, Originated Two Years before Latest Fiscal Year	137,899
Financing Receivable, Originated Three Years before Latest Fiscal Year	44,899
Financing Receivable, Originated Four Years before Latest Fiscal Year	26,767
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	24,214
Financing Receivable, Revolving	650,681
Financing Receivable, after Allowance for Credit Loss	1,018,266
Loans and Leases Receivable, Gross	2,062,345	1,395,036
Commercial And Industrial [Member] | Potential Weakness [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	2,302
Financing Receivable, Originated Two Years before Latest Fiscal Year	7,833
Financing Receivable, Originated Three Years before Latest Fiscal Year	4,573
Financing Receivable, Originated Four Years before Latest Fiscal Year	1,219
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	318
Financing Receivable, Revolving	15,248
Financing Receivable, after Allowance for Credit Loss	2,560
Loans and Leases Receivable, Gross	34,103
Commercial And Industrial [Member] | Pass [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	153,137
Financing Receivable, Originated Two Years before Latest Fiscal Year	107,318
Financing Receivable, Originated Three Years before Latest Fiscal Year	34,826
Financing Receivable, Originated Four Years before Latest Fiscal Year	23,065
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	22,334
Financing Receivable, Revolving	601,937
Financing Receivable, after Allowance for Credit Loss	1,012,974
Loans and Leases Receivable, Gross	1,958,168
Commercial And Industrial [Member] | Definite Weakness Loss Unlikely [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,553
Financing Receivable, Originated Two Years before Latest Fiscal Year	22,748
Financing Receivable, Originated Three Years before Latest Fiscal Year	5,500
Financing Receivable, Originated Four Years before Latest Fiscal Year	2,483
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	1,419
Financing Receivable, Revolving	33,496
Financing Receivable, after Allowance for Credit Loss	2,732
Loans and Leases Receivable, Gross	69,931
Commercial And Industrial [Member] | Partial Loss Probable [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	143
Financing Receivable, Revolving	0
Financing Receivable, after Allowance for Credit Loss	0
Loans and Leases Receivable, Gross	143
Commercial And Industrial [Member] | Definite Loss [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0
Financing Receivable, Revolving	0
Financing Receivable, after Allowance for Credit Loss	0
Construction Loans [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	205,772
Financing Receivable, Originated Two Years before Latest Fiscal Year	79,338
Financing Receivable, Originated Three Years before Latest Fiscal Year	66,406
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	6,750
Financing Receivable, Revolving	31,700
Financing Receivable, after Allowance for Credit Loss	182,291
Loans and Leases Receivable, Gross	573,334	547,293
Construction Loans [Member] | Potential Weakness [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	9,352
Financing Receivable, Originated Two Years before Latest Fiscal Year	5,037
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0
Financing Receivable, Revolving	328
Financing Receivable, after Allowance for Credit Loss	0
Loans and Leases Receivable, Gross	14,717
Construction Loans [Member] | Pass [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	196,420
Financing Receivable, Originated Two Years before Latest Fiscal Year	73,298
Financing Receivable, Originated Three Years before Latest Fiscal Year	66,406
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	6,750
Financing Receivable, Revolving	31,372
Financing Receivable, after Allowance for Credit Loss	182,291
Loans and Leases Receivable, Gross	557,614
Construction Loans [Member] | Definite Weakness Loss Unlikely [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,003
Financing Receivable, Originated Three Years before Latest Fiscal Year	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0
Financing Receivable, after Allowance for Credit Loss	0
Loans and Leases Receivable, Gross	1,003
Construction Loans [Member] | Partial Loss Probable [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0
Financing Receivable, Revolving	0
Financing Receivable, after Allowance for Credit Loss	0
Loans and Leases Receivable, Gross	0
Construction Loans [Member] | Definite Loss [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0
Financing Receivable, Revolving	0
Financing Receivable, after Allowance for Credit Loss	0
Loans and Leases Receivable, Gross	0
Small Business [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	29,184
Financing Receivable, Originated Two Years before Latest Fiscal Year	20,900
Financing Receivable, Originated Three Years before Latest Fiscal Year	14,807
Financing Receivable, Originated Four Years before Latest Fiscal Year	15,381
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	23,599
Financing Receivable, Revolving	36,120
Financing Receivable, after Allowance for Credit Loss	27,641
Loans and Leases Receivable, Gross	167,632	174,497
Small Business [Member] | Potential Weakness [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	10
Financing Receivable, Originated Two Years before Latest Fiscal Year	16
Financing Receivable, Originated Three Years before Latest Fiscal Year	10
Financing Receivable, Originated Four Years before Latest Fiscal Year	755
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	232
Financing Receivable, Revolving	736
Financing Receivable, after Allowance for Credit Loss	0
Loans and Leases Receivable, Gross	1,759
Small Business [Member] | Pass [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	28,766
Financing Receivable, Originated Two Years before Latest Fiscal Year	20,806
Financing Receivable, Originated Three Years before Latest Fiscal Year	14,627
Financing Receivable, Originated Four Years before Latest Fiscal Year	14,528
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	22,644
Financing Receivable, Revolving	34,569
Financing Receivable, after Allowance for Credit Loss	27,457
Loans and Leases Receivable, Gross	163,397
Small Business [Member] | Definite Weakness Loss Unlikely [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	408
Financing Receivable, Originated Two Years before Latest Fiscal Year	78
Financing Receivable, Originated Three Years before Latest Fiscal Year	170
Financing Receivable, Originated Four Years before Latest Fiscal Year	98
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	723
Financing Receivable, Revolving	786
Financing Receivable, after Allowance for Credit Loss	184
Loans and Leases Receivable, Gross	2,447
Small Business [Member] | Partial Loss Probable [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0
Financing Receivable, Revolving	29
Financing Receivable, after Allowance for Credit Loss	0
Loans and Leases Receivable, Gross	29
Small Business [Member] | Definite Loss [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0
Financing Receivable, Revolving	0
Financing Receivable, after Allowance for Credit Loss	0
Loans and Leases Receivable, Gross	0
Residential Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	167,901
Financing Receivable, Originated Two Years before Latest Fiscal Year	187,954
Financing Receivable, Originated Three Years before Latest Fiscal Year	168,283
Financing Receivable, Originated Four Years before Latest Fiscal Year	241,805
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	453,943
Financing Receivable, Revolving	0
Financing Receivable, after Allowance for Credit Loss	132,419
Loans and Leases Receivable, Gross	1,352,305	$ 1,590,569
Residential Real Estate [Member] | Default [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	760
Financing Receivable, Originated Three Years before Latest Fiscal Year	235
Financing Receivable, Originated Four Years before Latest Fiscal Year	167
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	4,724
Financing Receivable, Revolving	0
Financing Receivable, after Allowance for Credit Loss	728
Loans and Leases Receivable, Gross	6,614
Residential Real Estate [Member] | Pass [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	167,901
Financing Receivable, Originated Two Years before Latest Fiscal Year	187,194
Financing Receivable, Originated Three Years before Latest Fiscal Year	168,048
Financing Receivable, Originated Four Years before Latest Fiscal Year	241,638
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	449,219
Financing Receivable, Revolving	0
Financing Receivable, after Allowance for Credit Loss	131,691
Loans and Leases Receivable, Gross	1,345,691
Home Equity Loan [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	66,238
Financing Receivable, Originated Two Years before Latest Fiscal Year	59,534
Financing Receivable, Originated Three Years before Latest Fiscal Year	59,387
Financing Receivable, Originated Four Years before Latest Fiscal Year	44,817
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	122,852
Financing Receivable, Revolving	683,828
Financing Receivable, after Allowance for Credit Loss	60,274
Loans and Leases Receivable, Gross	1,101,054
Home Equity Loan [Member] | Default [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	455
Financing Receivable, Revolving	2,044
Financing Receivable, after Allowance for Credit Loss	0
Loans and Leases Receivable, Gross	2,566
Home Equity Loan [Member] | Pass [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	66,238
Financing Receivable, Originated Two Years before Latest Fiscal Year	59,534
Financing Receivable, Originated Three Years before Latest Fiscal Year	59,387
Financing Receivable, Originated Four Years before Latest Fiscal Year	44,817
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	122,397
Financing Receivable, Revolving	681,784
Financing Receivable, after Allowance for Credit Loss	60,274
Loans and Leases Receivable, Gross	1,098,488
Consumer Loan [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	450
Financing Receivable, Originated Two Years before Latest Fiscal Year	209
Financing Receivable, Originated Three Years before Latest Fiscal Year	759
Financing Receivable, Originated Four Years before Latest Fiscal Year	696
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	7,771
Financing Receivable, Revolving	12,495
Financing Receivable, after Allowance for Credit Loss	679
Loans and Leases Receivable, Gross	23,059
Consumer Loan [Member] | Default [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	20
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	34
Financing Receivable, Revolving	2
Financing Receivable, after Allowance for Credit Loss	0
Loans and Leases Receivable, Gross	56
Consumer Loan [Member] | Pass [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	450
Financing Receivable, Originated Two Years before Latest Fiscal Year	209
Financing Receivable, Originated Three Years before Latest Fiscal Year	739
Financing Receivable, Originated Four Years before Latest Fiscal Year	696
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	7,737
Financing Receivable, Revolving	12,493
Financing Receivable, after Allowance for Credit Loss	679
Loans and Leases Receivable, Gross	23,003
Revolving converted to term [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Revolving	24,169
Revolving converted to term [Member] | Commercial Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Revolving	16,341
Revolving converted to term [Member] | Commercial Real Estate [Member] | Potential Weakness [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Revolving	0
Revolving converted to term [Member] | Commercial Real Estate [Member] | Pass [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Revolving	16,341
Revolving converted to term [Member] | Commercial Real Estate [Member] | Definite Weakness Loss Unlikely [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Revolving	0
Revolving converted to term [Member] | Commercial Real Estate [Member] | Partial Loss Probable [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Revolving	0
Revolving converted to term [Member] | Commercial Real Estate [Member] | Definite Loss [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Revolving	0
Revolving converted to term [Member] | Commercial And Industrial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Revolving	2,627
Revolving converted to term [Member] | Commercial And Industrial [Member] | Potential Weakness [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Revolving	50
Revolving converted to term [Member] | Commercial And Industrial [Member] | Pass [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Revolving	2,577
Revolving converted to term [Member] | Commercial And Industrial [Member] | Definite Weakness Loss Unlikely [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Revolving	0
Revolving converted to term [Member] | Commercial And Industrial [Member] | Partial Loss Probable [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Revolving	0
Revolving converted to term [Member] | Commercial And Industrial [Member] | Definite Loss [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Revolving	0
Revolving converted to term [Member] | Construction Loans [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Revolving	1,077
Revolving converted to term [Member] | Construction Loans [Member] | Potential Weakness [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Revolving	0
Revolving converted to term [Member] | Construction Loans [Member] | Pass [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Revolving	1,077
Revolving converted to term [Member] | Construction Loans [Member] | Definite Weakness Loss Unlikely [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Revolving	0
Revolving converted to term [Member] | Construction Loans [Member] | Partial Loss Probable [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Revolving	0
Revolving converted to term [Member] | Construction Loans [Member] | Definite Loss [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Revolving	0
Revolving converted to term [Member] | Small Business [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Revolving	0
Revolving converted to term [Member] | Small Business [Member] | Potential Weakness [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Revolving	0
Revolving converted to term [Member] | Small Business [Member] | Pass [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Revolving	0
Revolving converted to term [Member] | Small Business [Member] | Definite Weakness Loss Unlikely [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Revolving	0
Revolving converted to term [Member] | Small Business [Member] | Partial Loss Probable [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Revolving	0
Revolving converted to term [Member] | Small Business [Member] | Definite Loss [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Revolving	0
Revolving converted to term [Member] | Residential Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Revolving	0
Revolving converted to term [Member] | Residential Real Estate [Member] | Default [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Revolving	0
Revolving converted to term [Member] | Residential Real Estate [Member] | Pass [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Revolving	0
Revolving converted to term [Member] | Home Equity Loan [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Revolving	4,124
Revolving converted to term [Member] | Home Equity Loan [Member] | Default [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Revolving	67
Revolving converted to term [Member] | Home Equity Loan [Member] | Pass [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Revolving	4,057
Revolving converted to term [Member] | Consumer Loan [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Revolving	0
Revolving converted to term [Member] | Consumer Loan [Member] | Default [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Revolving	0
Revolving converted to term [Member] | Consumer Loan [Member] | Pass [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Revolving	$ 0