Quarterly report pursuant to Section 13 or 15(d)

Financial Instruments - Summary of Companys Long Term Debt Instruments at their Carrying Value and Fair Value (Detail)

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Financial Instruments - Summary of Companys Long Term Debt Instruments at their Carrying Value and Fair Value (Detail) - USD ($)
$ in Thousands
Jun. 30, 2022
Dec. 31, 2021
Debt Instrument [Line Items]    
Carrying value $ 139,067 $ 193,380
Fair value 134,932 242,104
Unsecured Debentures    
Debt Instrument [Line Items]    
Carrying value 14,896 57,171
Fair value 14,888 64,596
Secured Debentures    
Debt Instrument [Line Items]    
Carrying value 109,760 134,902
Fair value 105,938 176,487
Secured Notes    
Debt Instrument [Line Items]    
Carrying value 13,135  
Fair value 12,971  
Other Long Term Debt    
Debt Instrument [Line Items]    
Carrying value 1,276 1,307
Fair value $ 1,135 $ 1,021