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Borrowings - Narrative (Details) - USD ($) |  |  | 1 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Jun. 01, 2022 | Jun. 01, 2012 | Jan. 31, 2010 | Dec. 31, 2022 | Oct. 31, 2022 | Oct. 13, 2022 | Sep. 30, 2022
Junior Subordinated Notes |  |  |  |  |  |  |
Junior Subordinated Notes [Abstract] |  |  |  |  |  |  |
Aggregate principle balance of notes |  |  |  | $ 100,800,000 |  |  |
Weighted average fixed interest rate of debt |  |  |  | 6.86% |  |  |
Unamortized accretion |  |  |  | $ 27,986,000 |  |  | $ 28,503,000
Junior Subordinated Debt, Modified Terms |  |  |  |  |  |  |
Junior Subordinated Notes [Abstract] |  |  |  |  |  |  |
Aggregate principal amount of debt |  |  | $ 75,000,000 |  |  |  |
Redemption price percentage |  | 75.00% |  |  |  |  |
Annual increase of percentage of principal amount redeemable | 1.785% |  |  |  |  |  |
Junior Subordinated Debt, Modified Terms | LIBOR |  |  |  |  |  |  |
Junior Subordinated Notes [Abstract] |  |  |  |  |  |  |
Variable rate floor |  |  | 4.25% |  |  |  |
Variable rate cap |  |  | 9.25% |  |  |  |
Junior Subordinated Debt, Original Terms |  |  |  |  |  |  |
Junior Subordinated Notes [Abstract] |  |  |  |  |  |  |
Aggregate principal amount of debt |  |  |  | 25,800,000 |  |  |
Junior Subordinated Debt, Original Terms | LIBOR |  |  |  |  |  |  |
Junior Subordinated Notes [Abstract] |  |  |  |  |  |  |
Basis spread on variable rate |  |  | 2.45% |  |  |  |
Secured Revolving Credit Facility |  |  |  |  |  |  |
Line of Credit Facility [Abstract] |  |  |  |  |  |  |
Credit facility, maximum borrowing capacity |  |  |  |  | $ 250,000,000 | $ 265,000,000 |
Credit facility, available increase in borrowing capacity |  |  |  |  |  | 135,000,000 |
Secured Revolving Credit Facility |  |  |  | 0 |  |  | 0
Letters of credit secured using cash collateral |  |  |  | 0 |  |  | 5,500,000
Amount of available borrowings under the secured revolving credit facility |  |  |  | 265,000,000 |  |  | 244,500,000
Secured Revolving Credit Facility | Maximum |  |  |  |  |  |  |
Line of Credit Facility [Abstract] |  |  |  |  |  |  |
Credit facility, maximum borrowing capacity |  |  |  |  |  | $ 400,000,000 |
Letter of Credit |  |  |  |  |  |  |
Line of Credit Facility [Abstract] |  |  |  |  |  |  |
Letters of credit secured using cash collateral |  |  |  | 30,400,000 |  |  | 29,700,000
Collateral amount |  |  |  | $ 31,500,000 |  |  | $ 31,500,000

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- Definition Line of Credit Facility, Available Increase In Borrowing Capacity + References No definition available. + Details
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- Definition Percentage points added to the reference rate to compute the variable rate on the debt instrument. + References No definition available. + Details
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- Definition Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b)(1) -URI https://asc.fasb.org/extlink&oid=123466204&loc=SL6031897-161870 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI https://asc.fasb.org/extlink&oid=126734703&loc=d3e572229-122910 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI https://asc.fasb.org/extlink&oid=126897435&loc=d3e534808-122878 + Details
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- Definition Percentage price of original principal amount of debt at which debt can be redeemed by the issuer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 470 -Section 50 -Paragraph 3 -Subparagraph e -URI https://asc.fasb.org/extlink&oid=123599511&loc=d3e64711-112823 + Details
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- Definition Amount, after accumulated amortization, of debt discount. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 1A -URI https://asc.fasb.org/extlink&oid=124435984&loc=d3e28541-108399 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI https://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 1D -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=123466505&loc=SL123495340-112611 + Details
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- Definition Weighted average interest rate of debt outstanding. + References No definition available. + Details
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- Definition The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI https://asc.fasb.org/extlink&oid=126897435&loc=d3e534808-122878 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI https://asc.fasb.org/extlink&oid=126734703&loc=d3e572229-122910 + Details
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- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- Definition Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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