Summary of Significant Accounting Policies (Policies)	9 Months Ended
Summary of Significant Accounting Policies (Policies)	Sep. 30, 2021
Accounting Policies [Abstract]
Basis of Accounting	The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the U.S. (GAAP) for interim financial information, and with the rules and regulations of the SEC.
Consolidation	These unaudited condensed consolidated financial statements do not include all disclosures associated with the Company’s consolidated annual financial statements included in its Annual Report on Form 10-K for the year ended December 31, 2020, and, accordingly, should be read in conjunction with the referenced annual report. In the opinion of management, all adjustments (all of which are normal and recurring in nature) considered necessary for a fair presentation have been included. The accompanying condensed consolidated financial statements include the accounts of the Company and its wholly owned subsidiaries where the Company exerts control. Investments in which the Company does not have control, and is not considered to be the primary beneficiary of a Variable Interest Entity (VIE), but where the Company exercises significant influence over the operating and financial policies of the investee, are accounted for using the equity method of accounting. Intercompany balances and transactions have been eliminated.
Use of Estimates	Use of Estimates The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of (1) assets and liabilities and the disclosure of contingent assets and liabilities as of the date of the financial statements, and (2) revenues and expenses during the reporting period. Actual results could differ from those estimates.
Significant Risk and Uncertainties	Significant Risks and Uncertainties The COVID-19 pandemic has caused, and is likely to continue to cause severe economic, market and other disruptions worldwide, which could lead to material impairments of our assets, increases in our allowance for credit losses and changes in judgments in determining the fair value of our assets. Conditions in the bank lending, capital and other financial markets may deteriorate, and our access to capital and other sources of funding may become constrained or more costly, which could materially and adversely affect the availability and terms of future borrowings, renewals, re-financings and other capital raises. The Company is closely monitoring the impact of the ongoing COVID-19 pandemic and any variants on all aspects of its business in all geographies, including how it will impact its customers and business partners. While the Company did not incur significant disruptions during 2020 from the COVID-19 pandemic, the nine-months ended September 30, 2021 were negatively impacted by COVID-19 related disruptions in (i) the food supply chain; (ii) our customers’ production of goods; (iii) the labor market impacting availability and cost; and (iv) the overall impact of inflation on the cost to provide our services. We expect that end-consumer demand for food will remain consistent over the long-term with historic levels overall but varying between retail and food service sectors. The consistent end consumer demand has driven down holdings in our facilities as it remains steady and production has remained challenged since the onset of the pandemic. We expect it will continue to do so until our customers are able to ramp production back up to pre-pandemic levels for an extended period of time in order to rebuild inventory in the supply chain. However, uncertainty still surrounds the impact of the pandemic and recovery ultimately depends on many factors. COVID-19 disruptions in certain markets where we or our customers operate continue to impact the food supply chain and our business. As a result, occupancy and throughput volume continue at lower than historical levels experienced prior to COVID-19. As the Company continues to protect its employees from the spread of COVID-19, it is incurring elevated labor related costs and incremental health and safety supplies costs relative to its pre-pandemic experience. We continue to expect to see inflationary impacts in the cost of providing our services, but anticipate that these will be partially mitigated through price increases that have either taken effect or are expected to take effect during the remainder of the year. The Company is unable to predict the impact that the COVID-19 pandemic will have on its financial condition, results of operations and cash flows due to numerous uncertainties. The extent to which COVID-19 impacts our operations will depend on future developments, which are highly uncertain and cannot be predicted with any degree of confidence, including the scope, severity, duration and geographies of the outbreak, the actions taken to contain the COVID-19 pandemic or mitigate its impact as requested or mandated by governmental authorities or otherwise voluntarily taken by individuals or businesses, the direct and indirect economic effects of the illness and containment measures, and supply chain disruption, among others. As a result, we cannot at this time predict the impact of the COVID-19 pandemic, but it could have a material adverse effect on our business, financial condition, liquidity, results of operations and prospects.
Impairment of Long-Lived Assets	Impairment of Long-Lived AssetsFor the nine months ended September 30, 2021, the Company recorded impairment charges totaling $3.3 million, which included an impairment charge of $1.7 million related to costs associated with development projects which management determined it would no longer pursue and a charge of $1.6 million for certain software costs that were determined no longer usable. For the nine months ended September 30, 2020, the Company recorded impairment charges totaling $6.3 million, which included an impairment charge of $3.7 million of Quarry segment assets related to the sale of the business and an impairment charge of $2.6 million of Managed segment assets due to the strategic decision to accelerate the exit of a leased managed facility during the third quarter of 2020 and another leased managed facility that the Company exited during the fourth quarter of 2020.
Business Combinations	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	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.