Amendments to the Accounting Standards Codification - Additional Information (Detail)	9 Months Ended
	Sep. 30, 2020
Accounting Changes And Error Corrections [Abstract]
Change in Accounting Principle, Accounting Standards Update, Adopted [true false]	true
Change in Accounting Principle, Accounting Standards Update, Adoption Date	Jan. 01, 2020
Change in Accounting Principle, Accounting Standards Update, Immaterial Effect [true false]	true
Accounting Standards Update [Extensible List]	us-gaap:AccountingStandardsUpdate201813Member