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Loans and Leases and Allowance for Loan and Lease Losses - Loan Risk Rating (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Financing Receivable, Recorded Investment [Line Items]
Total loans	$ 2,652,663	$ 2,382,243
Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	1,313,247	1,012,976
Consumer Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	478,161	443,930
Construction and Land Development [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	326,374	278,075
Commercial and Industrial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	469,739	634,446
Leases Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	53,396
Consumer and Other [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	11,746	12,816
All Other Loans and leases [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	2,609,034	2,350,179
All Other Loans and leases [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	2,551,469	2,247,263
All Other Loans and leases [Member] | Watch [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	47,648	91,611
All Other Loans and leases [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	5,612	4,812
All Other Loans and leases [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	4,260	6,359
All Other Loans and leases [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	45	134
All Other Loans and leases [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	1,290,091	996,853
All Other Loans and leases [Member] | Commercial Real Estate [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	1,245,064	922,153
All Other Loans and leases [Member] | Commercial Real Estate [Member] | Watch [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	40,106	66,287
All Other Loans and leases [Member] | Commercial Real Estate [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	3,841	4,446
All Other Loans and leases [Member] | Commercial Real Estate [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	1,080	3,967
All Other Loans and leases [Member] | Consumer Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	467,298	433,672
All Other Loans and leases [Member] | Consumer Real Estate [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	461,422	417,302
All Other Loans and leases [Member] | Consumer Real Estate [Member] | Watch [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	1,490	14,218
All Other Loans and leases [Member] | Consumer Real Estate [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	1,527	46
All Other Loans and leases [Member] | Consumer Real Estate [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	2,859	2,020
All Other Loans and leases [Member] | Consumer Real Estate [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans		86
All Other Loans and leases [Member] | Construction and Land Development [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	323,470	272,727
All Other Loans and leases [Member] | Construction and Land Development [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	323,156	269,350
All Other Loans and leases [Member] | Construction and Land Development [Member] | Watch [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	240	3,296
All Other Loans and leases [Member] | Construction and Land Development [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	74	81
All Other Loans and leases [Member] | Commercial and Industrial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	466,868	634,138
All Other Loans and leases [Member] | Commercial and Industrial [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	460,588	625,836
All Other Loans and leases [Member] | Commercial and Industrial [Member] | Watch [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	5,767	7,673
All Other Loans and leases [Member] | Commercial and Industrial [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	244	320
All Other Loans and leases [Member] | Commercial and Industrial [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	224	261
All Other Loans and leases [Member] | Commercial and Industrial [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	45	48
All Other Loans and leases [Member] | Leases Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	49,648
All Other Loans and leases [Member] | Leases Portfolio Segment [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	49,648
All Other Loans and leases [Member] | Consumer and Other [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	11,659	12,789
All Other Loans and leases [Member] | Consumer and Other [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	11,591	12,622
All Other Loans and leases [Member] | Consumer and Other [Member] | Watch [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	45	137
All Other Loans and leases [Member] | Consumer and Other [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	23	30
Purchased Credit Impaired Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	43,629	32,064
Purchased Credit Impaired Loans [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	29,227	20,749
Purchased Credit Impaired Loans [Member] | Watch [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	8,583	7,427
Purchased Credit Impaired Loans [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	649	76
Purchased Credit Impaired Loans [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	5,170	3,812
Purchased Credit Impaired Loans [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	23,156	16,123
Purchased Credit Impaired Loans [Member] | Commercial Real Estate [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	11,769	11,072
Purchased Credit Impaired Loans [Member] | Commercial Real Estate [Member] | Watch [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	7,719	3,381
Purchased Credit Impaired Loans [Member] | Commercial Real Estate [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	579	19
Purchased Credit Impaired Loans [Member] | Commercial Real Estate [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	3,089	1,651
Purchased Credit Impaired Loans [Member] | Consumer Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	10,863	10,258
Purchased Credit Impaired Loans [Member] | Consumer Real Estate [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	8,473	8,382
Purchased Credit Impaired Loans [Member] | Consumer Real Estate [Member] | Watch [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	754	224
Purchased Credit Impaired Loans [Member] | Consumer Real Estate [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	70	57
Purchased Credit Impaired Loans [Member] | Consumer Real Estate [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	1,566	1,595
Purchased Credit Impaired Loans [Member] | Construction and Land Development [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	2,904	5,348
Purchased Credit Impaired Loans [Member] | Construction and Land Development [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	2,344	1,008
Purchased Credit Impaired Loans [Member] | Construction and Land Development [Member] | Watch [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	91	3,820
Purchased Credit Impaired Loans [Member] | Construction and Land Development [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	469	520
Purchased Credit Impaired Loans [Member] | Commercial and Industrial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	2,871	308
Purchased Credit Impaired Loans [Member] | Commercial and Industrial [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	2,824	262
Purchased Credit Impaired Loans [Member] | Commercial and Industrial [Member] | Watch [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	1
Purchased Credit Impaired Loans [Member] | Commercial and Industrial [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	46	46
Purchased Credit Impaired Loans [Member] | Leases Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	3,748
Purchased Credit Impaired Loans [Member] | Leases Portfolio Segment [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	3,748
Purchased Credit Impaired Loans [Member] | Consumer and Other [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	87	27
Purchased Credit Impaired Loans [Member] | Consumer and Other [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	69	25
Purchased Credit Impaired Loans [Member] | Consumer and Other [Member] | Watch [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	$ 18	$ 2

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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
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