Description of Business and Basis of Presentation (Policies)	9 Months Ended
Sep. 30, 2024
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation The accompanying interim Condensed Consolidated Financial Statements are prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”) for interim financial information and in conformity with the requirements of the U.S. Securities and Exchange Commission ("SEC"). As permitted under those rules, certain footnotes or other financial information required by GAAP for complete financial statements have been condensed or omitted. In management’s opinion, the accompanying interim Condensed Consolidated Financial Statements reflect all adjustments of a normal and recurring nature that are necessary to fairly present the interim Condensed Consolidated Financial Statements. All intercompany accounts and transactions have been eliminated in consolidation. The operating results for the three and nine months ended September 30, 2024 are not necessarily indicative of the results that may be expected for the year ending December 31, 2024. The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the interim Condensed Consolidated Financial Statements and accompanying notes. The Company evaluates its estimates and assumptions on an ongoing basis and relies on historical experience and various other factors that it believes to be reasonable under the circumstances to determine such estimates. Actual results could differ from those estimates and such differences may be material to the interim Condensed Consolidated Financial Statements. These interim Condensed Consolidated Financial Statements and accompanying notes should be read in conjunction with the consolidated financial statements and notes thereto included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2023.
Noncontrolling Interest	Noncontrolling Interest The Company accounted for its investment in UNIS Document Solutions Co. Ltd. ("UDS"), under the purchase method of accounting, in accordance with Accounting Standards Codification ("ASC") 805, Business Combinations. UDS has been consolidated in the Company's financial statements from the date of acquisition. Noncontrolling interest, which represents the 35% noncontrolling interest in UDS owned by the joint venture ("JV") partner, is reflected on the Company's Condensed Consolidated Financial Statements.
Revenue Recognition	Revenue Recognition Revenue is recognized when control of the promised goods or services is transferred to ARC's customers, in an amount that reflects the consideration it expects to be entitled to in exchange for those goods or services. Digital Printing consists of professional services and software services to (i) reproduce and distribute large-format and small-format documents in either black and white or color (“Ordered Prints”) and (ii) specialized graphic color printing. Substantially all of the Company’s revenue from Digital Printing comes from professional services to reproduce Ordered Prints. Sales of Ordered Prints are initiated through a customer order or quote and are governed by established terms and conditions agreed upon at the onset of the customer relationship. Revenue is recognized when the performance obligation under the terms of a contract with a customer are satisfied, which generally occurs with the transfer of control of the Ordered Prints. Transfer of control occurs at a specific point in time, when the Ordered Prints are delivered to the customer’s site or handed to the customer for walk-in orders. Revenue is measured as the amount of consideration the Company expects to receive in exchange for transferring goods or providing services. Taxes collected concurrent with revenue-producing activities are excluded from revenue. MPS consists of placement, management, and optimization of print and imaging equipment in customers' offices, job sites, and other facilities. MPS relieves the Company’s customers of the burden of purchasing print equipment and related supplies and maintaining print devices and print networks, and it shifts their costs to a “per-use” basis. MPS is supported by the Company's hosted proprietary technology, Abacus®, which allows customers to capture, control, manage, print, and account for their documents. Under its MPS contracts, the Company is paid a fixed rate per unit for each print produced (per-use), often referred to as a “click charge”. MPS sales are driven by the ongoing print needs of the Company’s customers at their facilities. Certain MPS arrangements are accounted for as operating leases under ASC 842, Leases. Scanning and Digital Imaging combines software and professional services to facilitate the capture, management, access and retrieval of documents and information that have been produced in the past. Scanning and Digital Imaging includes the Company's hosted SKYSITE ® software and ARC Facilities solution to organize, search and retrieve documents, as well as the provision of services that include the capture and conversion of hardcopy and electronic documents into digital files (“Scanned Documents”), and their cloud-based storage and maintenance. Sales of Scanning and Digital Imaging professional services, which represent substantially all revenue for the business line, are initiated through a customer order or proposal and are governed by established terms and conditions agreed upon at the onset of the customer relationship. Revenue is recognized when the performance obligation under the terms of a contract with a customer are satisfied; generally, this occurs with the transfer of control of the digital files. Transfer of control occurs at a specific point-in-time, when the Scanned Documents are delivered to the customer either through SKYSITE, ARC Facilities, or through other electronic media. Revenue is measured as the amount of consideration the Company expects to receive in exchange for transferring goods or providing services. Taxes collected concurrent with revenue-producing activities are excluded from revenue. Equipment and Supplies sales consist of reselling printing, imaging, and related equipment (“Goods”) to customers primarily in architectural, engineering and construction firms. Sales of Equipment and Supplies are initiated through a customer order and are governed by established terms and conditions agreed upon at the onset of the customer relationship. Revenue is recognized when the performance obligations under the terms of a contract with a customer are satisfied; generally, this occurs with the transfer of control of the Goods. Transfer of control occurs at a specific point-in-time, when the Goods are delivered to the customer’s site. Revenue is measured as the amount of consideration the Company expects to receive in exchange for transferring goods or providing services. Taxes collected concurrent with revenue-producing activities are excluded from revenue. The Company has experienced minimal customer returns or refunds and does not offer a warranty on equipment that it is reselling.
Recent Accounting Pronouncements Not Yet Adopted	Recent Accounting Pronouncements Not Yet Adopted In December 2023, the FASB issued ASU 2023-09, “Income Taxes (Topic 740): Improvements to Income Tax Disclosures,” which requires public entities to disclose specific tax rate reconciliation categories, as well as income taxes paid disaggregated by jurisdiction, amongst other disclosure enhancements. The ASU is effective for financial statements issued for annual periods beginning after December 15, 2024, with early adoption permitted. The ASU can be adopted on a prospective or retrospective basis. The Company is evaluating the disclosure requirements related to the new standard. In November 2023, the FASB issued ASU 2023-07, “Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures,” which updates reportable segment disclosure requirements, primarily through enhanced disclosures about significant segment expenses and information used to assess segment performance. The guidance is effective for fiscal years beginning after December 15, 2023, and interim periods within fiscal years beginning after December 15, 2024. Retrospective adoption is required for all prior periods presented in the financial statements. The Company is evaluating the disclosure requirements related to the new standard but does not expect it to have a material impact on its consolidated financials or disclosures.
Segment Reporting	Segment Reporting The provisions of ASC 280, Segment Reporting, require public companies to report financial and descriptive information about their reportable operating segments. The Company identifies operating segments based on the various business activities that earn revenue and incur expense and whose operating results are reviewed by the Company's Chief Executive Officer, who is the Company's chief operating decision maker. Because its operating segments have similar products and services, classes of customers, production processes, distribution methods and economic characteristics, the Company operates as a single reportable segment.
Risk and Uncertainties	Risk and Uncertainties The Company generates a significant portion of its revenue from sales of services and products to customers in the architectural, engineering, construction and building owner/operator ("AEC/O") industry. As a result, the Company's results largely depend on the strength of that industry. The Company's historical operating results reflect the cyclical and variable nature of the AEC/O industry. ARC believes that the AEC/O industry generally experiences downturns several months after a downturn in the general economy, and that there may be a similar delay in the recovery of the AEC/O industry following a recovery of the general economy. A downturn in the AEC/O industry would diminish demand for all of the Company's products and services, and would therefore negatively affect the Company's revenues and have a material adverse effect on the Company's business, operating results and financial condition. As part of the Company’s growth strategy, ARC intends to continue to offer and grow a variety of service offerings that are relatively new to the company. The success of the Company's efforts will be affected by its ability to acquire new customers for the Company's new service offerings as well as sell the new service offerings to existing customers. The Company’s inability to successfully market and execute these relatively new service offerings could significantly affect its business and reduce its long- term revenue, resulting in an adverse effect on its results of operations and financial condition.
Earnings per Share	The Company accounts for earnings per share in accordance with ASC 260, Earnings Per Share. Basic earnings per share is computed by dividing net income attributable to ARC by the weighted-average number of shares of common stock outstanding for the period. Diluted earnings per common share is computed similarly to basic earnings per share except that the denominator is increased to include the number of additional shares of common stock that would have been outstanding if shares subject to outstanding options and acquisition rights had been issued and if the additional shares were dilutive. Common share equivalents are excluded from the computation if their effect is anti-dilutive.
Goodwill	Goodwill In accordance with ASC 350, Intangibles - Goodwill and Other, the Company assesses goodwill for impairment annually as of September 30, and more frequently if events and circumstances indicate that goodwill might be impaired. At September 30, 2024, the Company performed its annual assessment and determined that goodwill was not impaired. Goodwill impairment testing is performed at the reporting unit level. Goodwill is assigned to reporting units at the date the goodwill is initially recorded. Once goodwill has been assigned to reporting units, it no longer retains its association with a particular acquisition, and all of the activities within a reporting unit, whether acquired or internally generated, are available to support the value of the goodwill. There can be no assurance that the estimates and assumptions made for purposes of the Company’s goodwill impairment analysis in 2024 will prove to be accurate predictions of the future. If the Company’s assumptions, including forecasted EBITDA of certain reporting units, are not achieved, then the Company may be required to record goodwill impairment charges in future periods, whether in connection with the next annual impairment testing in the third quarter of 2025, or on an interim basis, if any such change constitutes a triggering event (as defined under ASC 350, Intangibles-Goodwill and Other) outside of the quarter when the Company regularly performs its annual goodwill impairment test. It is not possible at this time to determine if any such future impairment charge would result or, if it does, whether such charge would be material.
Long-Lived Assets	The Company periodically assesses potential impairments of its long-lived assets in accordance with the provisions of ASC 360, Accounting for the Impairment or Disposal of Long-lived Assets. An impairment review is performed whenever events or changes in circumstances indicate that the carrying value of the assets may not be recoverable. The Company groups its assets at the lowest level for which identifiable cash flows are largely independent of the cash flows of the other assets and liabilities. The Company has determined that the lowest level for which identifiable cash flows are available is the regional level, which is the operating segment level. Factors considered by the Company include, but are not limited to, significant underperformance relative to historical or projected operating results; significant changes in the manner of use of the acquired assets or the strategy for the overall business; and significant negative industry or economic trends. When the carrying value of a long-lived asset may not be recoverable based upon the existence of one or more of the above indicators of impairment, the Company estimates the future undiscounted cash flows expected to result from the use of the asset and its eventual disposition. If the sum of the expected future undiscounted cash flows and eventual disposition is less than the carrying amount of the asset, the Company recognizes an impairment loss. An impairment loss is reflected as the amount by which the carrying amount of the asset exceeds the fair value of the asset, based on the fair value if available, or discounted cash flows, if fair value is not available. The Company assessed potential impairments of its long-lived assets as of September 30, 2024 and concluded that there was no impairment.
Other Intangible Assets	Other intangible assets that have finite lives are amortized over their useful lives. Customer relationships are amortized using the accelerated method, based on customer attrition rates, over their estimated useful lives of 13 (weighted average) years.
Fair Value Measurements	In accordance with ASC 820, Fair Value Measurement, the Company has categorized its assets and liabilities that are measured at fair value into a three-level fair value hierarchy. If the inputs used to measure fair value fall within different levels of the hierarchy, the categorization is based on the lowest level input that is significant to the fair value measurement. The three levels of the hierarchy are defined as follows: Level 1 inputs to the valuation methodology are quoted prices (unadjusted) for identical assets or liabilities in active markets. Level 2 inputs to the valuation methodology include quoted prices for similar assets and liabilities in active markets, and inputs that are observable for the asset or liability, either directly or indirectly, for substantially the full term of the financial instrument. Level 3 inputs to the valuation methodology are unobservable and significant to the fair value measurement.

Description of Business and Basis of Presentation (Policies)

9 Months Ended

Sep. 30, 2024

The accompanying interim Condensed Consolidated Financial Statements are prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”) for interim financial information and in conformity with the requirements of the U.S. Securities and Exchange Commission ("SEC"). As permitted under those rules, certain footnotes or other financial information required by GAAP for complete financial statements have been condensed or omitted. In management’s opinion, the accompanying interim Condensed Consolidated Financial Statements reflect all adjustments of a normal and recurring nature that are necessary to fairly present the interim Condensed Consolidated Financial Statements. All intercompany accounts and transactions have been eliminated in consolidation. The operating results for the three and nine months ended September 30, 2024 are not necessarily indicative of the results that may be expected for the year ending December 31, 2024.

The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the interim Condensed Consolidated Financial Statements and accompanying notes. The Company evaluates its estimates and assumptions on an ongoing basis and relies on historical experience and various other factors that it believes to be reasonable under the circumstances to determine such estimates. Actual results could differ from those estimates and such differences may be material to the interim Condensed Consolidated Financial Statements.

These interim Condensed Consolidated Financial Statements and accompanying notes should be read in conjunction with the consolidated financial statements and notes thereto included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2023.

Noncontrolling Interest

The Company accounted for its investment in UNIS Document Solutions Co. Ltd. ("UDS"), under the purchase method of accounting, in accordance with Accounting Standards Codification ("ASC") 805, Business Combinations. UDS has been consolidated in the Company's financial statements from the date of acquisition. Noncontrolling interest, which represents the 35% noncontrolling interest in UDS owned by the joint venture ("JV") partner, is reflected on the Company's Condensed Consolidated Financial Statements.

Revenue Recognition

Revenue is recognized when control of the promised goods or services is transferred to ARC's customers, in an amount that reflects the consideration it expects to be entitled to in exchange for those goods or services.

Digital Printing consists of professional services and software services to (i) reproduce and distribute large-format and small-format documents in either black and white or color (“Ordered Prints”) and (ii) specialized graphic color printing. Substantially all of the Company’s revenue from Digital Printing comes from professional services to reproduce Ordered Prints. Sales of Ordered Prints are initiated through a customer order or quote and are governed by established terms and conditions agreed upon at the onset of the customer relationship. Revenue is recognized when the performance obligation under the terms of a contract with a customer are satisfied, which generally occurs with the transfer of control of the Ordered Prints. Transfer of control occurs at a specific point in time, when the Ordered Prints are delivered to the customer’s site or handed to the customer for walk-in orders. Revenue is measured as the amount of consideration the Company expects to receive in exchange for transferring goods or providing services. Taxes collected concurrent with revenue-producing activities are excluded from revenue.

MPS consists of placement, management, and optimization of print and imaging equipment in customers' offices, job sites, and other facilities. MPS relieves the Company’s customers of the burden of purchasing print equipment and related supplies and maintaining print devices and print networks, and it shifts their costs to a “per-use” basis. MPS is supported by the Company's hosted proprietary technology, Abacus®, which allows customers to capture, control, manage, print, and account for their documents. Under its MPS contracts, the Company is paid a fixed rate per unit for each print produced (per-use), often referred to as a “click charge”. MPS sales are driven by the ongoing print needs of the Company’s customers at their facilities. Certain MPS arrangements are accounted for as operating leases under ASC 842, Leases.

Scanning and Digital Imaging combines software and professional services to facilitate the capture, management, access and retrieval of documents and information that have been produced in the past. Scanning and Digital Imaging includes the Company's hosted SKYSITE ® software and ARC Facilities solution to organize, search and retrieve documents, as well as the provision of services that include the capture and conversion of hardcopy and electronic documents into digital files (“Scanned Documents”), and their cloud-based storage and maintenance. Sales of Scanning and Digital Imaging professional services,

which represent substantially all revenue for the business line, are initiated through a customer order or proposal and are governed by established terms and conditions agreed upon at the onset of the customer relationship. Revenue is recognized when the performance obligation under the terms of a contract with a customer are satisfied; generally, this occurs with the transfer of control of the digital files. Transfer of control occurs at a specific point-in-time, when the Scanned Documents are delivered to the customer either through SKYSITE, ARC Facilities, or through other electronic media. Revenue is measured as the amount of consideration the Company expects to receive in exchange for transferring goods or providing services. Taxes collected concurrent with revenue-producing activities are excluded from revenue.

Equipment and Supplies sales consist of reselling printing, imaging, and related equipment (“Goods”) to customers primarily in architectural, engineering and construction firms. Sales of Equipment and Supplies are initiated through a customer order and are governed by established terms and conditions agreed upon at the onset of the customer relationship. Revenue is recognized when the performance obligations under the terms of a contract with a customer are satisfied; generally, this occurs with the transfer of control of the Goods. Transfer of control occurs at a specific point-in-time, when the Goods are delivered to the customer’s site. Revenue is measured as the amount of consideration the Company expects to receive in exchange for transferring goods or providing services. Taxes collected concurrent with revenue-producing activities are excluded from revenue. The Company has experienced minimal customer returns or refunds and does not offer a warranty on equipment that it is reselling.

Recent Accounting Pronouncements Not Yet Adopted

In December 2023, the FASB issued ASU 2023-09, “Income Taxes (Topic 740): Improvements to Income Tax Disclosures,” which requires public entities to disclose specific tax rate reconciliation categories, as well as income taxes paid disaggregated by jurisdiction, amongst other disclosure enhancements. The ASU is effective for financial statements issued for annual periods beginning after December 15, 2024, with early adoption permitted. The ASU can be adopted on a prospective or retrospective basis. The Company is evaluating the disclosure requirements related to the new standard.

In November 2023, the FASB issued ASU 2023-07, “Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures,” which updates reportable segment disclosure requirements, primarily through enhanced disclosures about significant segment expenses and information used to assess segment performance. The guidance is effective for fiscal years beginning after December 15, 2023, and interim periods within fiscal years beginning after December 15, 2024. Retrospective adoption is required for all prior periods presented in the financial statements. The Company is evaluating the disclosure requirements related to the new standard but does not expect it to have a material impact on its consolidated financials or disclosures.

Segment Reporting

The provisions of ASC 280, Segment Reporting, require public companies to report financial and descriptive information about their reportable operating segments. The Company identifies operating segments based on the various business activities that earn revenue and incur expense and whose operating results are reviewed by the Company's Chief Executive Officer, who is the Company's chief operating decision maker. Because its operating segments have similar products and services, classes of customers, production processes, distribution methods and economic characteristics, the Company operates as a single reportable segment.

Risk and Uncertainties

The Company generates a significant portion of its revenue from sales of services and products to customers in the architectural, engineering, construction and building owner/operator ("AEC/O") industry. As a result, the Company's results largely depend on the strength of that industry. The Company's historical operating results reflect the cyclical and variable nature of the AEC/O industry. ARC believes that the AEC/O industry generally experiences downturns several months after a downturn in the general economy, and that there may be a similar delay in the recovery of the AEC/O industry following a recovery of the general economy. A downturn in the AEC/O industry would diminish demand for all of the Company's products and services, and would therefore negatively affect the Company's revenues and have a material adverse effect on the Company's business, operating results and financial condition.

As part of the Company’s growth strategy, ARC intends to continue to offer and grow a variety of service offerings that are relatively new to the company. The success of the Company's efforts will be affected by its ability to acquire new customers for the Company's new service offerings as well as sell the new service offerings to existing customers. The Company’s inability to successfully market and execute these relatively new service offerings could significantly affect its business and reduce its long- term revenue, resulting in an adverse effect on its results of operations and financial condition.

Earnings per Share

The Company accounts for earnings per share in accordance with ASC 260, Earnings Per Share. Basic earnings per share is computed by dividing net income attributable to ARC by the weighted-average number of shares of common stock outstanding for the period. Diluted earnings per common share is computed similarly to basic earnings per share except that the denominator is increased to include the number of additional shares of common stock that would have been outstanding if shares subject to outstanding options and acquisition rights had been issued and if the additional shares were dilutive. Common share equivalents are excluded from the computation if their effect is anti-dilutive.

Goodwill

In accordance with ASC 350, Intangibles - Goodwill and Other, the Company assesses goodwill for impairment annually as of September 30, and more frequently if events and circumstances indicate that goodwill might be impaired. At September 30, 2024, the Company performed its annual assessment and determined that goodwill was not impaired.

Goodwill impairment testing is performed at the reporting unit level. Goodwill is assigned to reporting units at the date the goodwill is initially recorded. Once goodwill has been assigned to reporting units, it no longer retains its association with a particular acquisition, and all of the activities within a reporting unit, whether acquired or internally generated, are available to support the value of the goodwill.

There can be no assurance that the estimates and assumptions made for purposes of the Company’s goodwill impairment analysis in 2024 will prove to be accurate predictions of the future. If the Company’s assumptions, including forecasted EBITDA of certain reporting units, are not achieved, then the Company may be required to record goodwill impairment charges in future periods, whether in connection with the next annual impairment testing in the third quarter of 2025, or on an interim basis, if any such change constitutes a triggering event (as defined under ASC 350, Intangibles-Goodwill and Other) outside of the quarter when the Company regularly performs its annual goodwill impairment test. It is not possible at this time to determine if any such future impairment charge would result or, if it does, whether such charge would be material.

Long-Lived Assets

The Company periodically assesses potential impairments of its long-lived assets in accordance with the provisions of ASC 360, Accounting for the Impairment or Disposal of Long-lived Assets. An impairment review is performed whenever events or changes in circumstances indicate that the carrying value of the assets may not be recoverable. The Company groups its assets at the lowest level for which identifiable cash flows are largely independent of the cash flows of the other assets and liabilities. The Company has determined that the lowest level for which identifiable cash flows are available is the regional level, which is the operating segment level.

Factors considered by the Company include, but are not limited to, significant underperformance relative to historical or projected operating results; significant changes in the manner of use of the acquired assets or the strategy for the overall business; and significant negative industry or economic trends. When the carrying value of a long-lived asset may not be recoverable based upon the existence of one or more of the above indicators of impairment, the Company estimates the future undiscounted cash flows expected to result from the use of the asset and its eventual disposition. If the sum of the expected future undiscounted cash flows and eventual disposition is less than the carrying amount of the asset, the Company recognizes an impairment loss. An impairment loss is reflected as the amount by which the carrying amount of the asset exceeds the fair value of the asset, based on the fair value if available, or discounted cash flows, if fair value is not available. The Company assessed potential impairments of its long-lived assets as of September 30, 2024 and concluded that there was no impairment.

Other Intangible Assets

Other intangible assets that have finite lives are amortized over their useful lives. Customer relationships are amortized using the accelerated method, based on customer attrition rates, over their estimated useful lives of 13 (weighted average) years.

Fair Value Measurements

In accordance with ASC 820, Fair Value Measurement, the Company has categorized its assets and liabilities that are measured at fair value into a three-level fair value hierarchy. If the inputs used to measure fair value fall within different levels of the hierarchy, the categorization is based on the lowest level input that is significant to the fair value measurement. The three levels of the hierarchy are defined as follows:

Level 1 inputs to the valuation methodology are quoted prices (unadjusted) for identical assets or liabilities in active markets.

Level 2 inputs to the valuation methodology include quoted prices for similar assets and liabilities in active markets, and inputs that are observable for the asset or liability, either directly or indirectly, for substantially the full term of the financial instrument.

Level 3 inputs to the valuation methodology are unobservable and significant to the fair value measurement.