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v3.20.2

Leases - Narrative (Details) ft² in Thousands, $ in Thousands | 9 Months Ended |  |  |
--- | --- | --- | --- | ---
Sep. 30, 2020 USD ($) operatingLease branch lease_renew_option | Dec. 31, 2022 USD ($) ft² | Aug. 15, 2020 USD ($) | Dec. 31, 2019 USD ($)
Lessee, Lease, Description [Line Items] |  |  |  |
Lessee, number of operating leases | operatingLease | 60 |  |  |
Lessee, number of finance leases | branch | 1 |  |  |
Lessee, number of total operating leases, noncurrent | operatingLease | 54 |  |  |
Lessee, number of total finance leases, noncurrent | branch | 1 |  |  |
Lessee, operating and finance lease, number of options to renew | lease_renew_option | 1 |  |  |
Operating lease right-of-use assets | $ 52,410 |  |  | $ 32,539
Operating lease liabilities | 56,705 |  |  | 35,525
Right-of-use assets - finance | 1,616 |  |  | $ 0
Franklin Financial Network, Inc. |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |
Operating lease right-of-use assets |  |  | $ 24,330 |
Operating lease liabilities |  |  | 24,330 |
Right-of-use assets - finance |  |  | $ 1,630 |
Operating lease, impairment loss | $ 1,038 |  |  |
Forecast | Corporate headquarters |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |
Operating lease right-of-use assets |  | $ 29,000 |  |
Operating lease liabilities |  | $ 30,000 |  |
Net rentable area (square feet) | ft² |  | 52 |  |
Minimum |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |
Lessee, operating and finance lease, term of contract | 1 year |  |  |
Lessee, operating and finance lease, renewal term | 20 years |  |  |
Maximum |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |
Lessee, operating and finance lease, term of contract | 36 years |  |  |

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- Definition Lessee, Operating and Finance Lease, Renewal Term + References No definition available. + Details
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- Definition Amount, after accumulated amortization, of right-of-use asset from finance lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121603541&loc=SL77918627-209977 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Amount of loss from impairment of right-of-use asset from operating lease. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 25 -Paragraph 6 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=121593497&loc=SL77918431-209957 + Details
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- Definition Present value of lessee's discounted obligation for lease payments from operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121603541&loc=SL77918627-209977 + Details
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- Definition Amount of lessee's right to use underlying asset under operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121603541&loc=SL77918627-209977 + Details
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