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Loans and Lease Receivables - Schedule of Unpaid Principal Balance and Carrying Value for Acquired Non-impaired Loans and Leases (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Accounts Notes And Loans Receivable [Line Items]
Loans and leases	$ 3,785,661	$ 3,501,626	$ 2,277,492
Acquired Non-impaired Loans and Leases
Accounts Notes And Loans Receivable [Line Items]
Unpaid Principal Balance	710,161	1,018,921
Loans and leases	691,341	986,286
Commercial Real Estate
Accounts Notes And Loans Receivable [Line Items]
Loans and leases	1,276,542	1,261,607	891,693
Commercial Real Estate | Acquired Non-impaired Loans and Leases
Accounts Notes And Loans Receivable [Line Items]
Unpaid Principal Balance	356,787	473,262
Loans and leases	348,365	462,565
Residential Real Estate
Accounts Notes And Loans Receivable [Line Items]
Loans and leases	711,822	704,902	577,218
Residential Real Estate | Acquired Non-impaired Loans and Leases
Accounts Notes And Loans Receivable [Line Items]
Unpaid Principal Balance	130,412	127,478
Loans and leases	128,527	124,659
Construction, Land Development, and Other Land
Accounts Notes And Loans Receivable [Line Items]
Loans and leases	278,657	185,349	105,429
Construction, Land Development, and Other Land | Acquired Non-impaired Loans and Leases
Accounts Notes And Loans Receivable [Line Items]
Unpaid Principal Balance	38,416	38,494
Loans and leases	37,490	37,442
Commercial and Industrial
Accounts Notes And Loans Receivable [Line Items]
Loans and leases	1,331,565	1,144,797	521,238
Commercial and Industrial | Acquired Non-impaired Loans and Leases
Accounts Notes And Loans Receivable [Line Items]
Unpaid Principal Balance	159,599	344,879
Loans and leases	153,660	328,672
Installment and Other
Accounts Notes And Loans Receivable [Line Items]
Loans and leases	6,565	13,718	4,228
Installment and Other | Acquired Non-impaired Loans and Leases
Accounts Notes And Loans Receivable [Line Items]
Unpaid Principal Balance	971	1,831
Loans and leases	944	1,596
Lease Financing Receivables
Accounts Notes And Loans Receivable [Line Items]
Loans and leases	180,510	191,253	$ 177,686
Lease Financing Receivables | Acquired Non-impaired Loans and Leases
Accounts Notes And Loans Receivable [Line Items]
Unpaid Principal Balance	23,976	32,977
Loans and leases	$ 22,355	$ 31,352

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- Definition

Loans and leases receivable unpaid principal balance.

+ References

No definition available.

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+ References

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- Definition

Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. 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=118952595&loc=d3e4428-111522

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