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Loan and Lease Receivables - Schedule of Outstanding Loan and Lease Receivables (Details) - USD ($) $ in Thousands | Sep. 30, 2020 | Jun. 30, 2020 | Dec. 31, 2019 | Sep. 30, 2019 | Jun. 30, 2019 | Dec. 31, 2018
--- | --- | --- | --- | --- | --- | ---
Accounts Notes And Loans Receivable [Line Items] |  |  |  |  |  |
Total loans and leases | $ 4,379,130 |  | $ 3,780,636 |  |  |
Net unamortized deferred fees and costs | (7,725) |  | 2,289 |  |  |
Initial direct costs | 3,112 |  | 2,736 |  |  |
Allowance for loan and lease losses | (61,258) | $ (51,300) | (31,936) | $ (31,585) | $ (31,132) | $ (25,201)
Net loans and leases | 4,313,259 |  | 3,753,725 |  |  |
Lease financing receivables |  |  |  |  |  |
Net minimum lease payments | 209,606 |  | 193,359 |  |  |
Unguaranteed residual values | 5,207 |  | 1,347 |  |  |
Unearned income | (17,836) |  | (16,932) |  |  |
Total lease financing receivables | 196,977 |  | 177,774 |  |  |
Initial direct costs | 3,112 |  | 2,736 |  |  |
Lease financial receivables before allowance for lease losses | 200,089 |  | 180,510 |  |  |
Commercial Real Estate |  |  |  |  |  |
Accounts Notes And Loans Receivable [Line Items] |  |  |  |  |  |
Total loans and leases | 1,345,060 |  | 1,275,058 |  |  |
Allowance for loan and lease losses | (18,984) | (14,110) | (7,965) | (8,553) | (8,934) | (7,540)
Residential Real Estate |  |  |  |  |  |
Accounts Notes And Loans Receivable [Line Items] |  |  |  |  |  |
Total loans and leases | 632,890 |  | 711,499 |  |  |
Allowance for loan and lease losses | (3,790) | (3,741) | (1,990) | (2,251) | (2,171) | (1,751)
Construction, Land Development, and Other Land |  |  |  |  |  |
Accounts Notes And Loans Receivable [Line Items] |  |  |  |  |  |
Total loans and leases | 239,694 |  | 279,403 |  |  |
Allowance for loan and lease losses | (1,872) | (1,491) | (610) | (816) | (691) | (466)
Commercial and Industrial |  |  |  |  |  |
Accounts Notes And Loans Receivable [Line Items] |  |  |  |  |  |
Total loans and leases | 1,326,059 |  | 1,330,418 |  |  |
Allowance for loan and lease losses | (34,540) | (30,108) | (19,377) | (17,783) | (17,126) | (12,932)
Paycheck Protection Program ("PPP") |  |  |  |  |  |
Accounts Notes And Loans Receivable [Line Items] |  |  |  |  |  |
Total loans and leases | 635,378 |  |  |  |  |
Installment and Other |  |  |  |  |  |
Accounts Notes And Loans Receivable [Line Items] |  |  |  |  |  |
Total loans and leases | 3,072 |  | 6,484 |  |  |
Allowance for loan and lease losses | (37) | (36) | (50) | (55) | (67) | (49)
Lease Financing Receivables |  |  |  |  |  |
Accounts Notes And Loans Receivable [Line Items] |  |  |  |  |  |
Total loans and leases | 196,977 |  | 177,774 |  |  |
Allowance for loan and lease losses | $ (2,035) | $ (1,814) | $ (1,944) | $ (2,127) | $ (2,143) | $ (2,463)

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- Definition The net investment in direct financing leases as of the balance sheet date consisting of: (a) minimum lease payments due on direct financing leases, (b) unguaranteed residual value, and (c) any unamortized initial direct costs; less: (i) executory costs, (ii) unearned income, and (iii) the accumulated allowance for uncollectible minimum lease payments. + References Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 30 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=84165051&loc=d3e45377-112738 + Details
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