Fair Value Measurements and Disclosures - Additional Information (Detail)
Dec. 31, 2020
|Fair Value Disclosures [Abstract]|
|Carrying value of notes||$ 216,300,000|
|Debt instrument, estimated fair value||$ 199,000,000|
Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable.
Reference 1: http://www.xbrl.org/2003/role/disclosureRef