XML 169 R63.htm IDEA: XBRL DOCUMENT v3.21.1
FAIR VALUE DISCLOSURES - Summary of Carrying Amount and Fair Value of Fixed and Floating Rate Debt (Detail) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Fair Value, Option, Quantitative Disclosures [Line Items]    
Carrying amount $ 5,505 $ 6,995
Level 3    
Fair Value, Option, Quantitative Disclosures [Line Items]    
Carrying amount 5,505 6,995
Fair value $ 5,485 $ 6,820