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Long-Term Debt - Additional Information (Detail) - USD ($) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2021 | Dec. 31, 2020
Debt Instrument [Line Items] |  |
Principal payments on long -term debt due in 2022 | $ 53,300,000 |
Senior Secured Revolving Line Of Credit |  |
Debt Instrument [Line Items] |  |
Aggregate principal amount | $ 275,000,000 |
Credit agreement, covenant description | The Credit Agreement consists of a line of credit of up to $275,000, an accordion feature of up to $150,000, a letter of credit and swingline sub-facility (each having limits of $25,000) and has a maturity date of August 5, 2026. The Credit Agreement amends and restates the previous credit facility, which had a maturity date of June 30, 2022. With respect to key financial covenants, the Credit Agreement contains two: namely, borrowers are required to maintain a Total Leverage (“TL”) Ratio of no more than 3.5-to-1, during the first three years, stepping down to 3.25-to-1 as of September 30, 2024, and a Fixed Charge Coverage Ratio of at least 1.25-to-1. In addition, to the extent that it completes acquisitions totaling $15 million or more in any 90-day period, AMVAC may step-up the TL Ratio by 0.5-to-1, not to exceed 4.00-to-1, for the next three full consecutive quarters. |
Consolidated funded debt ratio | 3.25% |
Senior secured credit facility, maturity date | Aug. 05, 2026 |
Credit agreement, variable rate description | Under the Credit Agreement, revolving loans bear interest at a variable rate based, at borrower’s election with proper notice, on either (i) LIBOR plus the “Applicable Margin” which is based upon the Total Leverage (“TL”) Ratio (“LIBOR Revolver Loan”) or (ii) the greater of (x) the Prime Rate, (y) the Federal Funds Rate plus 0.5%, and (z) the Daily One-Month LIBOR Rate plus 1.00%, plus, in the case of (x), (y) or (z) the Applicable Margin (“Adjusted Base Rate Revolver Loan”). Interest payments for LIBOR Revolver Loans are payable on the last day of each interest period (either one-, three- or six- months, as selected by the borrower) |
Credit agreement, interest rate | 1.98% |
Senior Secured Revolving Line Of Credit | Fed Funds Effective Rate Overnight Index Swap Rate |  |
Debt Instrument [Line Items] |  |
Credit agreement, variable rate basis | 0.50% |
Senior Secured Revolving Line Of Credit | London Interbank Offered Rate (LIBOR) |  |
Debt Instrument [Line Items] |  |
Credit agreement, variable rate basis | 1.00% |
Senior Secured Revolving Line Of Credit | Base Rate |  |
Debt Instrument [Line Items] |  |
Credit agreement, interest payment period, description | last business day of each |
Senior Secured Revolving Line Of Credit | Term Loan |  |
Debt Instrument [Line Items] |  |
Accordion feature | $ 150,000,000 |
Senior Secured Revolving Line Of Credit | Credit Agreement |  |
Debt Instrument [Line Items] |  |
Available borrowings capacity under credit agreement |  | $ 86,736,000
Consolidated funded debt ratio | 0.50% |
Maximum | Senior Secured Revolving Line Of Credit |  |
Debt Instrument [Line Items] |  |
Available borrowings capacity under credit agreement | $ 25,000,000 |
Consolidated funded debt ratio | 3.50% |
Maximum | Senior Secured Revolving Line Of Credit | Credit Agreement |  |
Debt Instrument [Line Items] |  |
Consolidated funded debt ratio | 4.00% |
Joint venture, consideration | $ 50,000,000 |
Capacity to increase borrowings under credit agreement | $ 178,705,000 |
Minimum | Senior Secured Revolving Line Of Credit |  |
Debt Instrument [Line Items] |  |
Consolidated funded debt ratio | 1.25% |
Minimum | Senior Secured Revolving Line Of Credit | Credit Agreement |  |
Debt Instrument [Line Items] |  |
Joint venture, consideration | $ 15,000 |

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- Definition Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=116859721&loc=d3e6613-128477 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=120321790&loc=d3e6927-128479 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=116859721&loc=d3e6578-128477 + Details
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- Definition Description of minimum financial levels (for example, tangible net worth and working capital) and achievement of certain financial ratios (for example, working capital ratio and debt service coverage ratio), and adherence to certain clauses which generally require or restrict certain actions (for example, entering into a debt arrangement with equal or greater seniority, and selling or discontinuing a certain business segment or material subsidiary) to be in compliance with the covenant clauses of the debt agreement. May also include a discussion of the adverse consequences that would result if the entity violates or fails to satisfy the covenants. + 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 http://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 470 -Section 50 -Paragraph 3 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=123599511&loc=d3e64711-112823 + Details
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