SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)	3 Months Ended
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)	Mar. 31, 2018
Accounting Policies [Abstract]
Basis of Presentation	These Unaudited Consolidated Financial Statements should be read in conjunction with the Audited Consolidated Financial Statements, including the notes thereto, and other information included in the Annual Report on Form 10-K of BioScrip, Inc. and its wholly-owned subsidiaries (the “Company”) for the year ended December 31, 2017 (the “Annual Report”) filed with the U.S. Securities and Exchange Commission (“SEC”). These Unaudited Consolidated Financial Statements have been prepared in accordance with U.S. generally accepted accounting principles (“GAAP”) for interim financial information, and the instructions to Form 10-Q and Article 10 of Regulation S-X promulgated under the Securities Exchange Act of 1934, as amended (the “Exchange Act”). Accordingly, they do not include all of the information and footnotes required by GAAP for complete financial statements. The information furnished in these Unaudited Consolidated Financial Statements reflects all adjustments, including normal recurring adjustments, which are, in the opinion of management, necessary for a fair presentation of the results for the interim periods presented. Operating results for the three months ended March 31, 2018 require management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes and are not necessarily indicative of the results that may be expected for the full year ending December 31, 2018.
Consolidation	The Unaudited Consolidated Financial Statements include the accounts of the Company and its wholly-owned subsidiaries. All significant intercompany accounts and transactions have been eliminated in consolidation.
Cash and Cash Equivalents and Restricted Cash	Cash and Cash Equivalents and Restricted Cash Highly liquid investments with a maturity of three months or less when purchased are classified as cash equivalents. Restricted cash consists of cash balances held by financial institutions as collateral for letters of credit. These balances are reclassified to cash and cash equivalents when the underlying obligation is satisfied, or in accordance with the governing agreement.
Recent Accounting Pronouncements	Recent Accounting Pronouncements In May 2014, the FASB issued ASU 2014-09—Revenue from Contracts with Customers (Topic 606). The guidance requires an entity to recognize the amount of revenue to which it expects to be entitled for the transfer of promised goods or services to customers. The FASB delayed the effective date to annual reporting periods beginning after December 15, 2017, including interim reporting periods within that reporting period. The Company did not elect early adoption and applied the modified retrospective approach upon adoption which results in application of the new guidance only to contracts that are not completed at the adoption date and does not require adjustment of prior reporting periods. Assessment of the new guidance did not result in an opening retained earnings adjustment, but did result in the adjustment of accounts receivable as the allowance for doubtful accounts was eliminated upon implementation. Pursuant to the requirements of Topic 606, the transaction price to be recognized as revenue is estimated based upon the amount of cash ultimately expected to be collected. Therefore, amounts expected to be written off are reflected in the amount of revenue recognized upon fulfillment of the performance obligation. The new standard resulted in the recognition of amounts previously reported as bad debt expense as a reduction to revenue upon implementation; see Note 3 - Revenue. In July 2017, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2017-11—Earnings Per Share (Topic 260), Distinguishing Liabilities From Equity (Topic 480), and Derivatives and Hedging (Topic 815): I. Accounting for Certain Financial Instruments with Down Round Features and II. Replacement of the Indefinite Deferral for Mandatorily Redeemable Financial Instruments of Certain Nonpublic Entities and Certain Mandatorily Redeemable Noncontrolling Interests with a Scope Exception. ASU 2017-11 eliminates the requirement that a down round feature precludes equity classification when assessing whether an instrument is indexed to an entity’s own stock. A freestanding equity-linked financial instrument no longer would be accounted for as a derivative liability at fair value as a result of the existence of a down round feature. The effective date for ASU 2017-11 is for annual or any interim periods beginning after December 15, 2018. Early adoption is permitted. The adoption of this standard is not expected to have a material impact on the Company’s consolidated financial statements. In May 2017, the FASB issued ASU 2017-09—Compensation–Stock Compensation (Topic 718): Scope of Modification Accounting. ASU 2017-09 modifies when a change to the terms or conditions of a share-based payment award must be accounted for as a modification. The new guidance requires modification accounting if the fair value, vesting condition or the classification of the award is not the same immediately before and after a change to the terms and conditions of the award. The effective date for ASU 2017-09 is for annual or any interim periods beginning after December 15, 2017. The Company adopted this ASU effective January 1, 2018. The adoption of this standard did not materially impact the Company’s consolidated financial statements. In November 2016, the FASB issued ASU 2016-18—Statement of Cash Flows (Topic 230): Restricted Cash. ASU 2016-18 requires that a statement of cash flows explain the change during the period in the total of cash, cash equivalents, and amounts generally described as restricted cash or restricted cash equivalents. Therefore, amounts generally described as restricted cash and restricted cash equivalents should be included with cash and cash equivalents when reconciling the beginning-of-period and end-of-period total amounts shown on the statement of cash flows. The effective date for ASU 2016-18 is for annual or any interim periods beginning after December 15, 2017. The Company adopted this ASU effective January 1, 2018. The adoption of this standard did not materially impact the Company’s consolidated financial statements. In August 2016, the FASB issued ASU 2016-15—Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments. ASU 2016-15 provides guidance for eight specific cash flow issues with respect to how cash receipts and cash payments are classified in the statements of cash flows, with the objective of reducing diversity in practice. The effective date for ASU 2016-15 is for annual periods beginning after December 15, 2017, and interim periods within those fiscal years. Early adoption is permitted. The Company adopted this ASU effective January 1, 2018. The adoption of this standard did not materially impact the Company’s consolidated financial statements. In February 2016, the FASB issued ASU 2016-02—Leases (Topic 842), requiring lessees to recognize a right-of-use asset and a lease liability on the balance sheet for all leases with the exception of short-term leases. For lessees, leases will continue to be classified as either operating or finance leases in the income statement. The effective date of the new standard for public companies is for fiscal years beginning after December 15, 2018 and interim periods within those fiscal years. Early adoption is permitted. The new standard may be adopted using a modified retrospective transition and requires application of the new guidance at the beginning of the earliest comparative period presented. The Company is evaluating the effect that the updated standard will have on its consolidated financial statements. Adoption of ASC Topic 606, "Revenue from Contracts with Customers" On January 1, 2018, we adopted Topic 606 using the modified retrospective method applied to those contracts which were not completed as of January 1, 2018. Results for reporting periods beginning after January 1, 2018 are presented under Topic 606, while prior period amounts are not restated and continue to be reported in accordance with accounting standards in effect for those periods.
Revenue Recognition	Infusion Revenues The Company generates revenue principally through the provision of infusion services to provide clinical management services and the delivery of cost effective prescription medications. Prescription drugs are dispensed either through a pharmacy participating in the Company’s pharmacy network or a pharmacy owned by the Company. Fee-for-service agreements include pharmacy agreements, under which we dispense prescription medications through the Company’s pharmacy facilities. The Company provides a variety of therapies to patients. For infusion-related therapies, the Company frequently provides multiple deliverables of drugs and related nursing services. After applying the criteria from Topic 606, the Company concluded that multiple performance obligations exist in its contracts with its customers. Revenue is allocated to each performance obligation based on relative standalone price, determined based on reimbursement rates established in the third party payor contracts. Drug revenue is recognized at the time the drug is shipped, and nursing revenue is recognized on the date of service. Revenue Recognition ASC 606 requires an entity to recognize revenue to depict the transfer of goods or services to customers in an amount that reflects the consideration that it expects to be entitled in exchange for those goods or services. ASC 606 requires application of a five-step model to determine when to recognize revenue and at what amount. The revenue standard applies to all contracts with customers and revenues are to be recognized when control of the promised goods or services is transferred to the Company’s patients in an amount that reflects consideration expected to be received in exchange for those goods or services.