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New accounting pronouncements
 6 Months Ended
Jun. 30, 2023
Accounting Standards Update and Change in Accounting Principle [Abstract]  
New accounting pronouncements
In March 2022, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) No. 2022-02, Troubled Debt Restructurings and Vintage Disclosures. This standard modifies the accounting for troubled debt restructurings by creditors and modifies certain disclosure requirements. We adopted this standard on January 1, 2023 and elected to apply it prospectively to modifications occurring on or after January 1, 2023. Adoption of this standard did not impact our financial position as of June 30, 2023 or our results of operations for the six months ended June 30, 2023.

In March 2020, the FASB issued ASU No. 2020-04, Facilitation of the Effects of Reference Rate Reform on Financial Reporting. This standard provides optional expedients and exceptions for applying GAAP to contracts, hedging relationships and other transactions affected by the discontinuation of the London Interbank Offered Rate (LIBOR) or by another reference rate expected to be discontinued because of reference rate reform. In January 2021, the FASB issued ASU No 2021-01, Reference Rate Reform (Topic 848): Scope, which clarified the scope and application of the original guidance. Effective March 20, 2023, we modified our existing credit facility and our September 2022 interest rate swap agreement (Note 7) to utilize the Secured Overnight Financing Rate (SOFR) as the reference rate in the agreements. In accounting for these modifications, we adopted the reference rate reform guidance on a prospective basis as allowed under the provisions of ASU No. 2022-06, Deferral of the Sunset Date of Topic 848. Adoption of these standards did not have a material impact on our consolidated financial statements.