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Effect of New Accounting Pronouncements
 9 Months Ended
Sep. 30, 2021
Accounting Changes And Error Corrections [Abstract]  
Effect of New Accounting Pronouncements

2.  Effect of New Accounting Pronouncements    

Simplifying the Accounting for Income Taxes

In December 2019, the FASB issued ASU 2019-12, “Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes,” which is intended to simplify various aspects related to accounting for income taxes. ASU 2019-12 removes certain exceptions to the general principles in Topic 740 and also clarifies and amends existing guidance to improve consistent application.  The amendments in ASU 2019-12 are effective for public business entities for fiscal years beginning after December 15, 2020, including interim periods therein.  We adopted this new guidance effective January 1, 2021.  The adoption did not have any impact on our consolidated financial statements.