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Loans and Allowance for Credit Losses on Loans (Activity in Allowance for Loan Losses by Portfolio Segment) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |
Financing Receivable, Allowance for Credit Loss, Beginning Balance | $ 37,865 | $ 25,171 | $ 24,712
Loans charged off | (1,164) | (1,838) | (2,713)
Recoveries | 372 | 1,084 | 310
Provision (credit) | (3,817) | 13,215 | 2,862
Financing Receivable, Allowance for Credit Loss, Ending Balance | 33,256 | 37,865 | 25,171
Ending Balance: Individually evaluated for impairment |  |  | 463
Ending Balance: Collectively evaluated for impairment |  |  | 24,708
Ending Balance: Individually evaluated for impairment |  |  | 4,478
Ending Balance: Collectively evaluated for impairment |  |  | 3,090,545
Loans | 3,431,474 | 3,219,822 | 3,095,023
Commercial real estate |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |
Financing Receivable, Allowance for Credit Loss, Beginning Balance |  | 12,414 | 11,654
Loans charged off |  |  | (300)
Recoveries |  |  | 49
Provision (credit) |  |  | 1,011
Financing Receivable, Allowance for Credit Loss, Ending Balance |  |  | 12,414
Ending Balance: Individually evaluated for impairment |  |  | 30
Ending Balance: Collectively evaluated for impairment |  |  | 12,384
Ending Balance: Individually evaluated for impairment |  |  | 402
Ending Balance: Collectively evaluated for impairment |  |  | 1,242,995
Loans |  |  | 1,243,397
Commercial |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |
Financing Receivable, Allowance for Credit Loss, Beginning Balance | 6,703 | 3,985 | 3,957
Loans charged off | (799) | (1,130) | (1,238)
Recoveries | 220 | 572 | 225
Provision (credit) | (1,941) | 1,728 | 1,041
Financing Receivable, Allowance for Credit Loss, Ending Balance | 4,183 | 6,703 | 3,985
Ending Balance: Individually evaluated for impairment |  |  | 0
Ending Balance: Collectively evaluated for impairment |  |  | 3,985
Ending Balance: Individually evaluated for impairment |  |  | 319
Ending Balance: Collectively evaluated for impairment |  |  | 442,382
Loans | 363,695 | 381,494 | 442,701
Residential real estate |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |
Financing Receivable, Allowance for Credit Loss, Beginning Balance | 3,474 | 5,842 | 6,071
Loans charged off | (92) | (121) | (462)
Recoveries | 107 | 292 | 16
Provision (credit) | 2,644 | (1,410) | 217
Financing Receivable, Allowance for Credit Loss, Ending Balance | 6,133 | 3,474 | 5,842
Ending Balance: Individually evaluated for impairment |  |  | 364
Ending Balance: Collectively evaluated for impairment |  |  | 5,478
Ending Balance: Individually evaluated for impairment |  |  | 3,384
Ending Balance: Collectively evaluated for impairment |  |  | 1,066,990
Loans | 1,306,447 | 1,054,798 | 1,070,374
Home equity |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |
Financing Receivable, Allowance for Credit Loss, Beginning Balance | 2,616 | 2,423 | 2,796
Loans charged off | (162) | (317) | (412)
Recoveries | 4 | 33 | 1
Provision (credit) | (989) | (315) | 38
Financing Receivable, Allowance for Credit Loss, Ending Balance | 1,469 | 2,616 | 2,423
Ending Balance: Individually evaluated for impairment |  |  | 69
Ending Balance: Collectively evaluated for impairment |  |  | 2,354
Ending Balance: Individually evaluated for impairment |  |  | 373
Ending Balance: Collectively evaluated for impairment |  |  | 312,406
Loans | 210,403 | 258,573 | 312,779
Consumer |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |
Financing Receivable, Allowance for Credit Loss, Beginning Balance | 393 | 507 | 234
Loans charged off | (111) | (167) | (301)
Recoveries | 32 | 67 | 19
Provision (credit) | (235) | 206 | 555
Financing Receivable, Allowance for Credit Loss, Ending Balance | 79 | 393 | 507
Ending Balance: Individually evaluated for impairment |  |  | 0
Ending Balance: Collectively evaluated for impairment |  |  | 507
Ending Balance: Individually evaluated for impairment |  |  | 0
Ending Balance: Collectively evaluated for impairment |  |  | 25,772
Loans | $ 19,516 | $ 20,392 | $ 25,772

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- Definition Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=123577603&loc=SL6953423-111524 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(7)(2)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=124255206&loc=SL82895884-210446 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 1405 -Paragraph (a) -Subparagraph (3) Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 1405 -Paragraph (c) Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 1405 -Paragraph (a) -Subparagraph (1) + Details
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- Definition The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=123577603&loc=SL6953423-111524 + Details
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- Definition Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=123577603&loc=SL6953423-111524 + Details
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- Definition Amount of increase in allowance for credit loss on financing receivable from recovery. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 55 -Paragraph 79 -URI http://asc.fasb.org/extlink&oid=124267575&loc=SL82922352-210448 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(4) -URI http://asc.fasb.org/extlink&oid=123577603&loc=SL6953423-111524 + Details
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- Definition Amount before allowance and after deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=124259787&loc=d3e4428-111522 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=123577603&loc=d3e5074-111524 + Details
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