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Borrowings - Amended and Restated Credit Agreement (Details) - USD ($) | Sep. 30, 2021 | May 28, 2021 | Dec. 31, 2020
--- | --- | --- | ---
Borrowings |  |  |
Long-term debt | $ 49,233,000 |  | $ 4,757,000
Term Loan |  |  |
Borrowings |  |  |
Issuance of debt |  | $ 60,000,000.0 |
Long-term debt | 45,000,000 |  |
Revolving line of credit |  |  |
Borrowings |  |  |
Issuance of debt |  | $ 40,000,000.0 |
Second Amended and Restated Credit Agreement | Term Loan |  |  |
Borrowings |  |  |
Long-term debt | 57,000,000.0 |  |
Second Amended and Restated Credit Agreement | Revolving line of credit |  |  |
Borrowings |  |  |
Balance outstanding | $ 0 |  |
Second Amended and Restated Credit Agreement | One-month LIBOR rate |  |  |
Borrowings |  |  |
Interest rate (as a percent) |  | 1.75% |

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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 http://asc.fasb.org/extlink&oid=120520924&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 http://asc.fasb.org/extlink&oid=120400017&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 http://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 http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 + Details
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