Summary of Significant Accounting Policies	6 Months Ended
Summary of Significant Accounting Policies	Jun. 30, 2021
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies The following disclosure regarding certain of our significant accounting policies should be read in conjunction with Note 2 to the consolidated financial statements included in our Annual Report on Form 10-K for the year ended December 31, 2020, which provides additional information with regard to the accounting policies set forth herein and other significant accounting policies. Impairment of Long-Lived Assets For the three and six months ended June 30, 2021, the Company recorded impairment charges totaling $1.5 million related to costs associated with development projects which management determined it would no longer pursue. For the three and six months ended June 30, 2020, the Company recorded impairment charges totaling $3.7 million, related to the anticipated sale of our quarry business, which was subsequently completed on July 1, 2020. Capitalization of Costs Project costs that are clearly associated with the development of properties are capitalized as incurred. Project costs include all costs directly associated with the development of a property, including construction costs, interest, and costs of personnel working on the project. Costs that do not clearly relate to the projects under development are not capitalized and are charged to expense as incurred. Capitalization of costs begins when the activities necessary to get the development project ready for its intended use commence, which include costs incurred before the beginning of construction. Capitalization of costs ceases when the development project is substantially complete and ready for its intended use. Determining when a development project commences and when it is substantially complete and ready for its intended use involves a degree of judgment. We generally consider a development project to be substantially complete and ready for its intended use upon receipt of a certificate of occupancy. If and when development of a property is suspended pursuant to a formal change in the planned use of the property, we will evaluate whether the accumulated costs exceed the estimated value of the project and write off the amount of any such excess accumulated costs. For a development project that is suspended for reasons other than a formal change in the planned use of such property, the accumulated project costs are written off. Capitalized costs are allocated to the specific components of a project that are benefited. We capitalized interest of $3.5 million and $0.4 million for the three months ended June 30, 2021 and 2020, respectively. During the six months ended June 30, 2021 and 2020, we capitalized interest of $5.7 million and $1.2 million, respectively. During the three months ended June 30, 2021 and 2020, we capitalized amounts relating to insurance, property taxes, and compensation and travel expense of employees direct and incremental to development of properties of approximately $0.8 million and $0.2 million, respectively, and during each of the six months ended June 30, 2021 and 2020, we capitalized $1.4 million and $0.3 million, respectively. Business Combinations For business combinations, the excess of purchase price over the net fair value of assets acquired and liabilities assumed is recorded as goodwill. In an asset acquisition where we have determined that the cost incurred differs from the fair value of the net assets acquired, we assess whether we have appropriately determined the fair value of the assets and liabilities acquired and we also confirm that all identifiable assets have been appropriately identified and recognized. After completing this assessment, we allocate the difference on a relative fair value basis to all assets acquired except for financial assets (as defined in ASC 860, Transfers and Servicing), deferred taxes, and assets defined as “current” (as defined in ASC 210, Balance Sheet). Whether the acquired business is being accounted for as a business combination or an asset acquisition, the determination of fair values of identifiable assets and liabilities requires estimates and the use of valuation techniques. Significant judgment is involved specifically in determining the estimated fair value of the acquired land and buildings and improvements and intangible assets. For intangible assets, we typically use the excess earnings method. Significant estimates used in valuing intangible assets acquired in a business combination include, but are not limited to, revenue growth rates, customer attrition rates, operating costs and margins, capital expenditures, tax rates, long-term growth rates and discount rates. For land and buildings and improvements, we used a combination of methods including the cost approach to value buildings and improvements and the sales comparison approach to value the underlying land. Significant estimates used in valuing land and buildings and improvements acquired in a business combination include, but are not limited to estimates of indirect costs and entrepreneurial profit, which were added to the replacement cost of the acquired assets in order to estimate their fair value in the market. Refer to Note 3 for the disclosures related to recent acquisitions accounted for as a business combination. Recently Adopted Accounting Standards Defined Benefit Plans Effective January 1, 2021, we adopted ASU 2018-14, Compensation – Retirement Benefits – Defined Benefit Plans – General (Subtopic 715-20): Disclosure Framework – Changes to the Disclosure Requirements for Defined Benefit Plans, on a retrospective basis. This update amends ASC 715 to remove disclosures that are no longer considered cost beneficial, clarifies the specific requirements of disclosures, and adds disclosure requirements identified as relevant to defined benefit pension and other postretirement plans. The ASU’s changes related to disclosures are part of the FASB’s disclosure framework project. Adoption of the new standard did not have a material impact on the condensed consolidated financial statements. Future Adoption of Accounting Standards Reference Rate Reform In March 2020, the FASB issued ASU 2020-04, Reference Rate Reform (Topic 848). This ASU contains practical expedients for reference rate reform related activities that impact debt, leases, derivatives and other contracts. The guidance in ASU 2020-04 is optional and may be elected over time as reference rate reform activities occur. The Company has certain borrowings which are currently indexed to LIBOR. In March 2021, the administrator of LIBOR announced that the publication of LIBOR will cease for all GBP, EUR, CHF and JPY LIBOR settings and the one-week and two-month USD LIBOR settings immediately after December 31, 2021. It will stop publishing all remaining USD LIBOR settings (i.e. the overnight and the one-, three-, six- and 12-month settings) based on bank submissions immediately after June 30, 2023. The Company intends to apply the FASB’s optional expedients, when available, as it transitions to SOFR for its borrowings currently indexed to LIBOR. Accordingly, we do not believe that the transition to SOFR will have a material impact on the condensed consolidated financial statements.