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Fair Value Measurements - Summary of Company's Fair Value Hierarchy for its Financial Assets and Liabilities (Detail) - Fair Value, Measurements, Recurring [Member] - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021
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Assets: |  |  |
Fair value of investments |  | $ 25,488 | $ 25,394
Liabilities: |  |  |
Fair value of liabilities |  |  | (294)
Interest Rate Swap [Member] |  |  |
Liabilities: |  |  |
Fair value of liabilities | [1] |  | $ 294
Derivative Liability, Statement of Financial Position [Extensible Enumeration] |  |  | Liabilities
Money Market Funds [Member] |  |  |
Assets: |  |  |
Fair value of cash equivalents | [2] | 5,800 | $ 6,885
Marketable Investments [Member] |  |  |
Assets: |  |  |
Fair value of cash equivalents | [3] | 19,688 | 18,509
Level 1 [Member] |  |  |
Assets: |  |  |
Fair value of investments |  | 5,800 | 6,885
Liabilities: |  |  |
Fair value of liabilities |  |  | 0
Level 1 [Member] | Interest Rate Swap [Member] |  |  |
Liabilities: |  |  |
Fair value of liabilities | [1] |  | $ 0
Derivative Liability, Statement of Financial Position [Extensible Enumeration] |  |  | Liabilities
Level 1 [Member] | Money Market Funds [Member] |  |  |
Assets: |  |  |
Fair value of cash equivalents | [2] | 5,800 | $ 6,885
Level 1 [Member] | Marketable Investments [Member] |  |  |
Assets: |  |  |
Fair value of cash equivalents | [3] | 0 | 0
Fair Value, Inputs, Level 2 |  |  |
Assets: |  |  |
Fair value of investments |  | 19,688 | 18,509
Liabilities: |  |  |
Fair value of liabilities |  |  | (294)
Fair Value, Inputs, Level 2 | Interest Rate Swap [Member] |  |  |
Liabilities: |  |  |
Fair value of liabilities | [1] |  | $ 294
Derivative Liability, Statement of Financial Position [Extensible Enumeration] |  |  | Liabilities
Fair Value, Inputs, Level 2 | Money Market Funds [Member] |  |  |
Assets: |  |  |
Fair value of cash equivalents | [2] | 0 | $ 0
Fair Value, Inputs, Level 2 | Marketable Investments [Member] |  |  |
Assets: |  |  |
Fair value of cash equivalents | [3] | $ 19,688 | $ 18,509
[1] | The Company had an interest rate swap contract that hedged the risk of variability from interest payments on its borrowings (refer to Note 4 – Debt and Note 6 – Derivatives and Hedging). The fair value of the interest rate swap was based on mark-to-market valuations prepared by a third-party broker. Those valuations were based on observable interest rates and other observable market data, which the Company considers Level 2 inputs.
[2] | Included in cash and cash equivalents in the Consolidated Balance Sheets.
[3] | Marketable investments have been initially valued at the transaction price and subsequently valued, at the end of the reporting period, utilizing third party pricing services or other market observable data. The pricing services utilize industry standard valuation methods, including both income and market based approaches and observable market inputs to determine value. These observable market inputs include reportable trades, benchmark yields, credit spreads, broker/dealer quotes, bids, offers, current spot rates and other industry and economic events.

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- Definition Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. + References No definition available. + Details
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- Definition Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities not subject to a master netting arrangement and not elected to be offset. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 10 -URI https://asc.fasb.org/extlink&oid=99393222&loc=SL20226008-175313 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -URI https://asc.fasb.org/extlink&oid=123594938&loc=d3e13433-108611 Reference 4: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 22 -URI https://asc.fasb.org/extlink&oid=99393222&loc=SL20226052-175313 + Details
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- Definition Fair value of financial obligations, including, but not limited to, debt instruments, derivative liabilities, federal funds purchased and sold under agreements to repurchase, securities loaned or sold under agreements to repurchase, financial instruments sold not yet purchased, guarantees, line of credit, loans and notes payable, servicing liability, and trading liabilities. + References No definition available. + Details
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