Basis of Presentation (Policies)	3 Months Ended
Basis of Presentation (Policies)	Mar. 31, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	The accompanying condensed consolidated financial statements are unaudited. Certain information and disclosures required by U.S. generally accepted accounting principles, or GAAP, for complete financial statements have been condensed or omitted. We believe the disclosures made are adequate to make the information presented not misleading. However, the accompanying condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and notes contained in our Annual Report on Form 10-K for the year ended December 31, 2022, or our 2022 Annual Report. In the opinion of management, all adjustments (consisting of normal recurring accruals) considered necessary for a fair statement of results for the interim periods have been included. All intercompany transactions and balances with or among our consolidated subsidiaries have been eliminated. Operating results for interim periods are not necessarily indicative of the results that may be expected for the full year.
Use of Estimates	The preparation of financial statements in conformity with GAAP requires us to make estimates and assumptions that affect reported amounts. Actual results could differ from those estimates. Significant estimates in the accompanying condensed consolidated financial statements include the allowance for credit losses and the fair value of financial instruments.
Reclassifications	Certain prior year amounts have been reclassified to conform to current year presentation.
Recent Accounting Pronouncements	On January 1, 2023, we adopted Accounting Standards Update, or ASU, No. 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments, which replaces the “incurred loss” model for recognizing credit losses with a forward-looking “expected loss” model that generally will result in the earlier recognition of credit losses. The measurement of current expected credit losses, or CECL, is based upon historical experience, current conditions, and reasonable and supportable forecasts incorporating forward-looking information that affect the collectability of the reported amount. ASU No. 2016-13 is applicable to financial assets measured at amortized cost and off-balance sheet credit exposures, such as unfunded loan commitments. The allowance for credit losses required under ASU No. 2016-13 is a valuation account that is deducted from the related loans’ amortized cost basis on our condensed consolidated balance sheets. Our loans typically include commitments to fund incremental proceeds to borrowers over the life of the loan; these future funding commitments are also subject to the CECL model. The allowance for credit losses related to unfunded loan commitments is included in accounts payable, accrued liabilities and other liabilities on our condensed consolidated balance sheets. Given the lack of historical loss data related to our loan portfolio, we elected to estimate our expected losses using an analytical model that considers the likelihood of default and loss given default for each individual loan. This analytical model incorporates data from a third party database with historical loan loss information for commercial mortgage-backed securities and commercial real estate, or CRE, loans since 1998. We estimate the allowance for credit losses for our loan portfolio, including unfunded loan commitments, at the individual loan level. Significant inputs to the model include certain loan specific data, such as loan to value, or LTV, property type, geographic location, occupancy, vintage year, remaining loan term, net operating income, expected timing and amounts of future loan fundings, and macroeconomic forecast assumptions, including the performance of CRE assets, unemployment rates, interest rates and other factors. We utilize the model to estimate credit losses over a reasonable and supportable economic forecast period, followed by a straight-line reversion period to average historical losses. Average historical losses are established using a population of third party historical loss data that approximates our portfolio as of the measurement date. We evaluate the estimated allowance for each of our loans individually and we consider our internal loan risk rating as the primary credit quality indicator underlying our assessment. If a loan is determined to be collateral dependent (because the repayment of the loan is expected to be provided substantially through the operation or sale of the underlying collateral property) and the borrower is experiencing financial difficulties, but foreclosure is not probable, we may elect to apply a practical expedient to determine the loan's allowance for credit losses by comparing the collateral's fair value to the amortized cost basis of the loan. For collateral-dependent loans for which foreclosure is probable, the related allowance for credit losses is determined using the fair value of the collateral compared to the loan's amortized cost. Upon adoption of ASU No. 2016-13 using the modified retrospective transition method and, based on our loan portfolio, the then current economic environment and expectations for future conditions, we recorded a cumulative-effect adjustment reducing our cumulative net income on our condensed consolidated balance sheets by $6,595, establishing an allowance for credit losses of $4,893 with respect to our then outstanding loans held for investment and increasing accounts payable, accrued liabilities and other liabilities by $1,702 with respect to our then unfunded loan commitments. No reserve for loan losses or allowance for credit losses was recognized within our consolidated financial statements prior to our adoption of ASU No. 2016-13. Concurrent with our adoption of ASU No. 2016-13, on January 1, 2023, we adopted ASU No. 2022-02, Financial Instruments - Credit Losses (Topic 326): Troubled Debt Restructurings and Vintage Disclosures, which eliminated the guidance for and recognitions of troubled debt restructurings for all entities that adopted ASU No. 2016-13. Instead, an entity must determine whether a modification results in a new loan or continuation of an existing loan under Accounting Standards Codification, or ASC, 310, Receivables (Topic 310), or ASC 310. If a borrower is experiencing financial difficulty, enhanced disclosures are required. ASU No. 2022-02 also requires disclosure of current period gross write-offs by year of origination. The adoption of ASU No. 2022-02 using the prospective transition method did not have a material impact on our condensed consolidated financial statements. See Note 2 to our Consolidated Financial Statements included in Part IV, Item 15 of our 2022 Annual Report for further information regarding our measurement of reserves for loan losses prior to our adoption of ASU No. 2016-13 and our internal loan risk rating policy.