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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
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.